Molcan Corporation (Page 5) @ ChemBuyersGuide.com, Inc.

(S)-5-Chloro-N-(3-(2-chlorothiophene-5-carboxamido)-2-hydroxypropyl)-N-(4-(3-oxomorpholino)phenyl)thiophene-2-carboxamide
CAS:2204368-63-6
Rivaroxaban Impurity 10
RVR70

(S)-5-Chloro-N-(3-chloro-2-hydroxypropyl)thiophene-2-carboxamide
CAS:1384257-81-1
Rivaroxaban Impurity 21
RVR81

(S)-5-Hydroxy-2-(3-hydroxy-4-methoxyphenyl)-7-((2S,3S,4S,5S)-3,4,5-trihydroxy-6-(((2R,4S,5R)-3,4,5-trihydroxy-6-methyl-tetrahydro-2H-pyran-2-yloxy)methyl)-tetrahydro-2H-pyran-2-yloxy)-2,3-dihydrochromen-4-one
CAS:520-26-3
Hesperidin Diosmin EP Impurity B
HSP00

(S)-5-Methoxy-N-propyl-N-[2-(thiophen-2-yl)ethyl]-1,2,3,4-tetrahydronaphthalen-2-amine
CAS:1148154-91-9
Rotigotine EP Impurity H (Base) Rotigotine USP RC
RTG08B

(S)-5-Methoxy-N-propyl-N-[2-(thiophen-2-yl)ethyl]-1,2,3,4-tetrahydronaphthalen-2-amine HCl
Rotigotine EP Impurity H (HCl) Rotigotine USP RC
RTG08H

(S)-5-Methoxy-N-propyl-N-[2-(thiophen-2-yl)ethyl]-1,2,3,4-tetrahydronaphthalen-2-amine oxalate
Rotigotine EP Impurity H (Oxalate) Rotigotine USP
RTG08X

(S)-5-tert-Butoxy-4-(4-(((2,4-diaminopteridin-6-yl)methyl)(methyl)amino)benzamido)-5-oxopentanoic acid
CAS:79640-70-3
Methotrexate a-tert-Butyl Ester
MTX51

(S)-6,7-DIMETHOXY-1,2,3,4-TETRAHYDROISOQUINOLINE-3-CARBOXYLIC ACID
CAS:103733-66-0
Moexipril USP RC E
MXP25B

(S)-6,7-DIMETHOXY-1,2,3,4-TETRAHYDROISOQUINOLINE-3-CARBOXYLIC ACID HYDROCHLORIDE
CAS:82586-62-7
Moexipril USP RC E (HCl)
MXP25H

(S)-6,7-Dimethoxy-2-{(S)-2-[(S)-1-methoxy-1-oxo-4-phenylbutan-2-ylamino]propanoyl}-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid
CAS:122379-46-8
Moexipril USP RC G (Base) Moexipril Methyl Ester
MXP27B

(S)-6,7-Dimethoxy-2-{(S)-2-[(S)-1-methoxy-1-oxo-4-phenylbutan-2-ylamino]propanoyl}-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid hydrochloride
CAS:1356841-17-2
Moexipril USP RC G (HCl) Moexipril HCl Methyl Est
MXP27H

(S)-6,8-DIFLUORO-1-(1-HYDROXYPROPAN-2-YL)-7-(4-METHYLPIPERAZIN-1-YL)-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:1036016-10-0
Levofloxacin Impurity 2 Levofloxacin Hydroxy Acid
LFX62

(S)-6-((S)-5-(((S)-2-Nitro-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazin-6-yloxy)methyl)-2-(trifluoromethoxy)benzyloxy)-2-nitro-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazine
Pretomanid Impurity 7
PTD57

(S)-6-(4-(Trifluoromethoxy)benzyloxy)-2-nitro-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazine
CAS:187235-37-6
Pretomanid
PTD00

(S)-6-(4-Nitrophenyl)-2,3,5,6-tetrahydroimidazo[2,1-b]thiazole
CAS:76497-81-9
Levamisole 4-Nitro Impurity
LVM74

(S)-6-(6-Aminohexanamido)-2-(bis(carboxymethyl)amino)hexanoic acid
CAS:1043881-31-7
Aminocaproic Nitrilotriacetic Acid
ACP59

(S)-6-(propylamino)-5,6,7,8-tetrahydronaphthalen-1-ol
CAS:101470-23-9
Rotigotine EP Impurity B (Base) N-Desthienylethyl
RTG02B

(S)-6-(Propylamino)-5,6,7,8-tetrahydronaphthalen-1-ol HCl
Rotigotine EP Impurity B (HCl) N-Desthienylethyl
RTG02H

(S)-6-{Bis[2-(thiophen-2-yl)ethyl]amino}-5,6,7,8-tetrahydronaphthalen-1-ol hydrochloride
CAS:1369532-05-7
Rotigotine EP Impurity G (HCl) Rotigotine USP RC
RTG07H

(S)-6-Chloro-4-(3-methylbut-3-en-1-ynyl)-4-(trifluoromethyl)-2H-3,1-benzoxazin-2-one
Efavirenz Penteneyne Impurity (USP) Efavirenz USP
EFV45

(S)-6-Chloro-4-(cyclopropylethynyl)-1,4-dihydro-4-(trifluoromethyl)-2H-3,1-benzoxazin-2-one
CAS:154598-52-4
Efavirenz (S)-Efavirenz
EFV00

(S)-6-Chloro-4-(cyclopropylethynyl)-1-(4-methoxybenzyl)-4-(trifluoromethyl)-2H-3,1-benzoxazin-2-one
CAS:174819-21-7
Efavirenz N-Methoxybenzyl Impurity (USP) N-Benzyl
EFV79

(S)-6-Chloro-4-(pent-3-en-1-ynyl)-4-(trifluoromethyl)-1H-benzo[d][1,3]oxazin-2(4H)-one
Efavirenz Pent-3-Ene-1-Yne Impurity (USP)
EFV43

(S)-6-Chloro-4-[2-(2-methylcyclopropyl)eth-1-yn-1-yl]-4-(trifluoromethyl)-1,4-dihydro-2H-3,1-benzoxazin-2-one
Efavirenz IP Impurity G
EFV57

(S)-6-Fluoro-2-[(R)-oxiran-2-yl]chroman
Nebivolol USP RC D (SR)-Isomer
NBV24S

(S)-6-Fluoro-2-[(S)-oxiran-2-yl]chroman
Nebivolol USP RC C (SS)-Isomer
NBV23S

(S)-6-Methyl-4-phenyl-3,4-dihydrochromen-2-one
CAS:349547-18-8
Tolterodine Impurity 5
TTR65

(S)-7-((5,7-Difluorochroman-4-yl)oxy)-N,N,2-trimethyl-1H-benzo[d]imidazole-5-carboxamide
CAS:942195-55-3
Tegoprazan
TGP00

(S)-7-(Benzyloxy)-4-hydroxy-3-(3-oxo-1-phenylbutyl)-2H-chromen-2-one
Warfarin RC14
WFR74

(S)-7-Bromo-6-chloro-3-(2-oxo-3-(piperidin-2-yl)propyl)quinazolin-4(3H)-one
CAS:1819989-15-5
Halofuginone RC 6 (Base)
HLF66B

(S)-7-Bromo-6-chloro-3-(2-oxo-3-(piperidin-2-yl)propyl)quinazolin-4(3H)-one dihydrobromide
CAS:1819989-16-6
Halofuginone RC 6 (2HBr)
HLF66X

(S)-7-Hydroxy-5-methoxy-4-methyl-6-[2-(5-methyl-2-oxo-tetrahydro-furan-5-yl)-ethyl]-3H-isobenzofuranyl-1-one
CAS:79081-87-1
Mycophenolic Acid Lactone (S)-Isomer
MCP58

(S)-8-(((S)-QUINUCLIDIN-3-YLAMINO)METHYL)-5,6,7,8-TETRAHYDRONAPHTHALENE-1-CARBOXYLIC ACID
Palonosetron Acid (S,S)-Palonosetron Acid
PLN50

(S)-9,10-Difluoro-3-methyl-2,3,5,6-tetrahydro-[1,4]oxazino[2,3,4-ij]quinolin-7-one
CAS:1798902-76-7
Levofloxacin Impurity 11
LFX71

(S)-9,10-DIFLUORO-3-METHYL-2,3,5,6-TETRAHYDRO-7,7-O-ETHYLIDENE-7H-PYRIDO[1,2,3-DE]-1,4-BENZOXAZIN-7,7-DIOL
CAS:1798887-79-2
Levofloxacin Impurity 12
LFX72

(S)-9,10-DIFLURO-3-METHYL-7-OXO-2,3-DIHYDRO-7H-PYRIDO[1,2,3-DE][1,4]BENZOXAZINE-6-CARBOXYLIC ACID
CAS:100986-89-8
Levofloxacin EP Impurity F Levofloxacin USP RC B
LFX06

(S)-9-(1-Aminocyclopropyl)-10-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid
Pazufloxacin Impurity 7
PZF57

(S)-9-(2-PHOSPHONOMETHOXYPROPYL)ADENINE
CAS:147127-19-3
Tenofovir (S)-Isomer
TNF40B

(S)-9-(Cyanomethyl)-10-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid
Pazufloxacin Impurity 9
PZF59

(S)-9-Fluoro-10-(3-hydroxypropanoyl)-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid
CAS:164851-44-9
Pazufloxacin Impurity 11
PZF61

(S)-9-FLUORO-10-[FORMYL[2-(FORMYLMETHYLAMINO)ETHYL]AMINO]-2,3-DIHYDRO-3-METHYL-7-OXO-7H-PYRIDO[1,2,3-DE]-1,4-BENZOXAZINE-6-CARBOXYLIC ACID
CAS:151377-74-1
Levofloxacin Desethylene Diformyl Impurity N,N�-D
LFX36

(S)-9-Fluoro-3-methyl-10-(4-nitrosopiperazin-1-yl)-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid
CAS:1152314-62-9
Levofloxacin N-Nitroso Analog
LFX49

(S)-9-Fluoro-3-methyl-7-oxo-10-propionyl-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid
Pazufloxacin Impurity 15
PZF65

(S)-9-Fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6,10-dicarboxylic acid
Pazufloxacin Impurity 16
PZF66

(S)-9-Fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid
CAS:117620-84-5
Levofloxacin Impurity 20
LFX80

(S)-9-Fluoro-5-methyl-1-oxo-6,7-dihydro-1H,5H-benzo[i,j]-quinolizine-2-carboxylic acid
CAS:202349-45-9
Flumequine S-Isomer
FLQ52

(S)-9-Fluoro-5-methyl-1-oxo-6,7-dihydro-1H,5H-benzo[i,j]-quinolizine-2-carboxylic acid
CAS:202349-45-9
Flumequine (S)-Isomer
FLQ52

(S)-9-Fluoro-8-(4-hydroxypiperidin-1-yl)-5-methyl-1-oxo-6,7-dihydro-1H,5H-pyrido[3,2,1-ij]quinoline-2-carboxylic acid
CAS:154357-42-3
Nadifloxacin (S)-Isomer
NDF52

(S)-BENZYL 2-(2-(BENZOFURAN-6-CARBONYL)-5,7-DICHLORO-1,2,3,4-TETRAHYDROISOQUINOLINE-6-CARBOXAMIDO)-3-(3-(METHYLSULFONYL)PHENYL)PROPANOATE
CAS:1194550-67-8
Lifitegrast RC 4 Lifitegrast Benzyl Ester Lifite
LGS64

(S)-Benzyl 2-(5,7-dichloro-1,2,3,4-tetrahydroisoquinoline-6-carboxamido)-3-(3-(methylsulfonyl)phenyl)propanoate hydrochloride
CAS:1194550-65-6
Lifitegrast RC 3 (HCl)
LGS63H

(S)-Benzyl 2-(benzofuran-6-carboxamido)-3-(3-(methylsulfonyl)phenyl)propanoate
Lifitegrast RC 17
LGS77

(S)-BENZYL 2-AMINO-3-(3-(METHYLSULFONYL)PHENYL)PROPANOATE HYDROCHLORIDE
CAS:2049127-88-8
Lifitegrast RC 1
LGS61H

(S)-Benzyl 4-(4-(5-((1,3-dioxoisoindolin-2-yl)methyl)-2-oxooxazolidin-3-yl)-2-fluorophenyl)piperazine-1-carboxylate
Eperezolid RC 4
EPZ04

(S)-Benzyl 4-(4-(5-(acetamidomethyl)-2-oxooxazolidin-3-yl)-2-fluorophenyl)piperazine-1-carboxylate
Eperezolid RC 3
EPZ03

(S)-BUTYL 4-(4-((4-CHLOROPHENYL)(PYRIDIN-2-YL)METHOXY)PIPERIDIN-1-YL)BUTANOATE
CAS:1807606-59-2
Bepotastine Butyl Ester
BPT64B

(S)-Chloromethyl 9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylate
Levofloxacin Impurity 4 Levofloxacin Chloromethyl
LFX64

(S)-Cyano(3-phenoxyphenyl)methyl (1S,3R)-3-(2,2-dichloroethenyl)-2,2-dimethyl-cyclopropanecarboxylate
CAS:83860-31-5
Cypermethrin (1S,2R,1�S)-Isomer Cypermethrin (1S,
CMR55

(S)-Cyano(3-phenoxyphenyl)methyl (1S,3S)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylate
CAS:72204-43-4
Cypermethrin (1S,2S,1�S)-Isomer
CMR57

(S)-Diethyl (1-(6-amino-9H-purin-9-yl)propan-2-yloxy)methylphosphonate
CAS:1217630-57-3
Tenofovir Diethyl Ester (S)-Isomer
TNF64B

(S)-DIETHYL 2-(4-(3-CHLORO-4-FLUOROPHENYLAMINO)-7-(TETRAHYDROFURAN-3-YLOXY)QUINAZOLIN-6-YLAMINO)-2-OXOETHYLPHOSPHONATE
CAS:618061-76-0
Afatinib RC 15
AFN85

(S)-Dimethyl 2-(4-(((2,4-diamino-7-cyanopteridin-6-yl)methyl)(methyl)amino)benzamido)pentanedioate
CAS:112163-39-0
Methotrexate 7-Cyano Dimethyl Ester
MTX52

(S)-ETHYL 1-(1-PHENYLETHYL)-1H-IMIDAZOLE-5-CARBOXYLATE
CAS:56649-47-9
Etomidate S-Isomer (S)-Etomidate
EDT60

(S)-Ethyl 10-(1-aminocyclopropyl)-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylate
CAS:127046-18-8
Pazufloxacin Impurity 13 (S)-Pazufloxacin Ethyl E
PZF63

(S)-Ethyl 10-(cyanomethyl)-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylate
Pazufloxacin Impurity 18
PZF68

(S)-Ethyl 2-(2-(benzofuran-6-carbonyl)-5,7-dichloro-1,2,3,4-tetrahydroisoquinoline-6-carboxamido)-3-(3-(methylsulfonyl)phenyl)propanoate
CAS:2295862-24-5
Lifitegrast RC 14 Lifitegrast Ethyl Ester Lifit
LGS74

(S)-Ethyl 2-(benzyloxy)propanoate
CAS:54783-72-1
Levofloxacin Impurity 16
LFX76

(S)-Ethyl 2-[(3S, 5aS, 9aR, 10aS)-3-methyl-1,4-dioxodecahydro pyrazino[1,2-a]indol-2(1H)-yl]-4-phenylbutanoate
CAS:149881-40-3
Trandolapril EP Impurity D Trandolapril USP RC D
TDL04

(S)-Ethyl 2-{(3S,11aS)-8,9-dimethoxy-3-methyl-1,4-dioxo-3,4-dihydro-1H-pyrazino[1,2-b]isoquinolin-2(6H,11H,11aH)-yl}-4-phenylbutanoate
CAS:103733-51-3
Moexipril USP RC B Moexipril Diketopiperazine
MXP22

(S)-ETHYL 2-AMINO-3-(4-(2-AMINO-6-((R)-1-(4-CHLORO-2-(3-METHYL-1H-PYRAZOL-1-YL)PHENYL)-2,2,2-TRIFLUOROETHOXY)PYRIMIDIN-4-YL)PHENYL)PROPANOATE
CAS:1033805-22-9
Telotristat Ethyl Telotristat Ethyl Ester
TTS00B

(S)-Ethyl 2-amino-3-(4-(2-amino-6-((R)-1-(4-chloro-2-(3-methyl-1H-pyrazol-1-yl)phenyl)-2,2,2-trifluoroethoxy)pyrimidin-4-yl)phenyl)propanoate etiprate salt
CAS:1137608-69-5
Telotristat Ethyl Etiprate Salt Telotristat Ethyl
TTS00E

(S)-Ethyl 2-amino-3-(4-(bis(2-chloroethyl)amino)phenyl)propanoate
CAS:18067-07-7
Melphalan Ethyl Ester (Base)
MLP52B

(S)-Ethyl 2-amino-3-(4-(bis(2-chloroethyl)amino)phenyl)propanoate hydrochloride
CAS:112117-81-4
Melphalan Ethyl Ester (HCl)
MLP52H

(S)-Ethyl 3-(2-(dimethylamino)ethyl)-5-((2-oxooxazolidin-4-yl)methyl)-1H-indole-2-carboxylate hydrochloride
CAS:868622-23-5
Zolmitriptan USP RC D (HCl) Zolmitriptan 2-Carbox
ZMT24H

(S)-ETHYL 3-[2-(DIMETHYLAMINO)ETHYL]-5-[(2-OXOOXAZOLIDIN-4-YL)METHYL]-1H-INDOLE-2-CARBOXYLATE
CAS:191864-24-1
Zolmitriptan USP RC D (Base) Zolmitriptan 2-Carbo
ZMT24B

(S)-Ethyl 4-(4-((4-chlorophenyl)(pyridin-2-yl)methoxy)piperidin-1-yl)butanoate
CAS:190730-39-3
Bepotastine Ethyl Ester
BPT55B

(S)-Ethyl 4-chloro-2-(4-cyclopropyl-1,1,1-trifluoro-2-hydroxybut-3-yn-2-yl)phenylcarbamate
CAS:211563-41-6
Efavirenz Amino Alcohol Ethyl Carbamate (USP) Efa
EFV49

(S)-Ethyl 4-chloro-2-[4-cyclopropyl-2-(ethoxycarbonyloxy)-1,1,1-trifluorobut-3-yn-2-yl]phenylcarbamate
Efavirenz bis-Ethoxycarbonyl Impurity Efavirenz A
EFV48

(S)-Ethyl 4-methyl-1-((R)-1-phenylethyl)-1,2,3,6-tetrahydropyridine-2-carboxylate
CAS:134984-61-5
Argatroban RC 27
ATB87

(S)-Ethyl 6,7,8-trifluoro-1-(1-hydroxypropan-2-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylate
CAS:110548-03-3
Levofloxacin Impurity 29
LFX89

(S)-Ethyl 7,8-difluoro-1-(1-hydroxypropan-2-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylate
Levofloxacin Impurity 13
LFX73

(S)-ETHYL 9,10-DIFLUORO-3-METHYL-7-OXO-3,7-DIHYDRO-2H-[1,4]OXAZINO[2,3,4-IJ]QUINOLINE-6-CARBOXYLATE
CAS:106939-34-8
Levofloxacin Impurity 10
LFX70

(S)-Isopropyl 2-(((R)-((((S)-1-(6-amino-9H-purin-9-yl)propan-2-yl)oxy)methyl)(phenoxy) phosphoryl)amino)propanoate
Tenofovir Alafenamide Diasteromer-2
TNA82B

(S)-Isopropyl 2-amino-3-(4-(bis(2-chloroethyl)amino)phenyl)propanoate
CAS:104874-57-9
Melphalan Isopropyl Ester (Base)
MLP53B

(S)-Isopropyl 2-amino-3-(4-(bis(2-chloroethyl)amino)phenyl)propanoate dihydrochloride
Melphalan Isopropyl Ester (2HCl)
MLP53H

(S)-ISOPROPYL 4-(4-((4-CHLOROPHENYL)(PYRIDIN-2-YL)METHOXY)PIPERIDIN-1-YL)BUTANOATE
CAS:1807607-93-7
Bepotastine Isopropyl Ester
BPT63B

(S)-Methyl (2-oxo-3-(4-(3-oxomorpholino)phenyl)oxazolidin-5-yl)methylcarbamate
CAS:1838139-08-4
Rivaroxaban Impurity 24 Rivaroxaban Methoxy Analo
RVR84

(S)-METHYL 2-((S)-4-METHYL-2-((S)-2-(2-MORPHOLINOACETAMIDO)-4-PHENYLBUTANAMIDO)PENTANAMIDO)-3-PHENYLPROPANOATE
Carfilzomib Methoxide
CZM73

(S)-Methyl 2-(2-(benzofuran-6-carbonyl)-5,7-dichloro-1,2,3,4-tetrahydroisoquinoline-6-carboxamido)-3-(3-(methylsulfonyl)phenyl)propanoate
CAS:2295862-29-0
Lifitegrast RC 2 Lifitegrast Methyl Ester Lifit
LGS62

(S)-METHYL 2-AMINO-2-(2-CHLOROPHENYL)ACETATE
CAS:141109-14-0
Clopidogrel RC 2
CPG62

(S)-METHYL 2-AMINO-2-(4-HYDROXYPHENYL)ACETATE
CAS:26531-82-8
Amoxicillin RC 1 (Base)
AMX61B

(S)-METHYL 2-AMINO-2-(4-HYDROXYPHENYL)ACETATE HYDROCHLORIDE
CAS:127369-30-6
Amoxicillin RC 1 (HCl)
AMX61H

(S)-METHYL 2-AMINO-3-((S)-2-OXOPYRROLIDIN-3-YL)PROPANOATE HYDROCHLORIDE
Nirmatrelvir RC 7 (HCl)
NMT67H

(S)-METHYL 2-AMINO-3-CHLOROPROPANOATE
CAS:327064-64-2
Cycloserine RC 3 (Base)
CSR63B

(S)-METHYL 2-AMINO-3-CHLOROPROPANOATE HYDROCHLORIDE
CAS:112346-82-4
Cycloserine RC 3 (HCl)
CSR63H

(S)-METHYL 2-HYDROXY-3-METHOXY-3,3-DIPHENYLPROPANOATE
CAS:177036-78-1
Ambrisentan (S)-Hydroxy Methyl Ester
ABS75

(S)-Methyl 2-oxo-2-((2-oxo-3-(4-(3-oxomorpholino)phenyl)oxazolidin-5-yl)methylamino)acetate
Rivaroxaban Impurity 26
RVR86

(S)-Methyl 3-((tert-butoxycarbonyl)methyl)-5-methylhexanoate
CAS:1246816-46-5
Pregabalin Impurity 5
PRG65

(S)-Methyl 3-(4-(2-hydroxy-3-(isopropylamino)propoxy)phenyl)propanoate
CAS:115729-56-1
Esmolol (S)-Isomer (Base)
ESZ51B

(S)-Methyl 3-(4-(2-hydroxy-3-(isopropylamino)propoxy)phenyl)propanoate hydrochloride
CAS:112923-91-8
Esmolol (S)-Isomer (HCl)
ESZ51H

(S)-Methyl 3-(4-(oxiran-2-ylmethoxy)phenyl)propanoate
CAS:112805-58-0
Esmolol RC 2
ESZ62

(S)-Methyl 3-(aminomethyl)-5-methylhexanoate
CAS:779325-26-7
Pregabalin Impurity 23
PRG83

(S)-Methyl 4-(2-(1-(2-aminophenyl)-3-methylbutylamino)-2-oxoethyl)-2-ethoxybenzoate
CAS:1246820-55-2
Repaglinide Impurity 1 Repaglinide 2-Despiperidyl
RPG51

(S)-Methyl 5-amino-2-(4-amino-1-oxoisoindolin-2-yl)-5-oxopentanoate
CAS:878782-79-7
Lenalidomide Impurity 3
LLM63

(S)-Methyl 9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylate
CAS:862690-19-5
Levofloxacin Impurity 3 Levofloxacin Methyl Ester
LFX63

(S)-Methyl 9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylate
Levofloxacin Impurity 21
LFX81

(S)-N,N'-(1-METHYL-1,2-ETHANEDIYL)BIS[N-(2-AMINO-2-OXOETHYL)-GLYCINE
CAS:75459-34-6
Dexrazoxane RC 2 (Diacid)
DRZ62A

(S)-N,N'-(1-METHYL-1,2-ETHANEDIYL)BIS[N-(2-AMINO-2-OXOETHYL)-GLYCINE DISODIUM SALT
Dexrazoxane RC 2 (Disodium)
DRZ62N

(S)-N,N-Dimethyl-1-[3-(4-nitrophenoxy)phenyl]ethanamine
CAS:1346242-32-7
Rivastigmine Ether Impurity (Base) Rivastigmine 4
RVS41B

(S)-N,N-Dimethyl-1-[3-(4-nitrophenoxy)phenyl]ethanamine tartrate salt
Rivastigmine Ether Impurity (Tartrate) Rivastigmi
RVS41T

(S)-N,N-DIMETHYL-3-(NAPHTHALEN-1-YLOXY)-1-PHENYLPROPAN-1-AMINE
CAS:119356-77-3
Dapoxetine (Base)
DXE00B

(S)-N,N-DIMETHYL-3-(NAPHTHALEN-1-YLOXY)-1-PHENYLPROPAN-1-AMINE HYDROCHLORIDE
CAS:129938-20-1
Dapoxetine (HCl) Dapoxetine Hydrochloride
DXE00H

(S)-N-(((S)-1,2,3,4-TETRAHYDRONAPHTHALEN-1-YL)METHYL)QUINUCLIDIN-3-AMINE
CAS:177793-80-5
Palonosetron Impurity 3
PLN63

(S)-N-((2S,4S,5S)-5-(2-(2,6-dimethylphenoxy)acetamido)-4-hydroxy-1,6-diphenylhexan-2-yl)-3-methyl-2-(2-oxo-3,6-dihydropyrimidin-1(2H)-yl)butanamide
Lopinavir Dehydro Impurity 4,5-Dehydro(pyrimidin-
LPN80

(S)-N-((3-(3-FLUORO-4-(4-(2-HYDROXYACETYL)PIPERAZIN-1-YL)PHENYL)-2-OXOOXAZOLIDIN-5-YL)METHYL)ACETAMIDE
CAS:165800-04-4
Eperezolid
EPZ00

(S)-N-((3-(3-FLUORO-4-(PIPERAZIN-1-YL)PHENYL)-2-OXOOXAZOLIDIN-5-YL)METHYL)ACETAMIDE
CAS:154590-66-6
Eperezolid RC 2
EPZ02

(S)-N-((R)-1-((2R,4R)-1,2-Dihydroxy-2,6-dimethyl-3-oxoheptan-4-ylamino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide
Carfilzomib (2R,4R)-Diol (7R)-Isomer
CZM65

(S)-N-((R)-1-((2R,4S)-1,2-Dihydroxy-2,6-dimethyl-3-oxoheptan-4-ylamino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide
Carfilzomib (2R,4S)-Diol (7R)-Isomer
CZM66

(S)-N-((R)-1-((2S,4R)-1,2-Dihydroxy-2,6-dimethyl-3-oxoheptan-4-ylamino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide
Carfilzomib (2S,4R)-Diol (7R)-Isomer
CZM67

(S)-N-((R)-1-((2S,4S)-1,2-Dihydroxy-2,6-dimethyl-3-oxoheptan-4-ylamino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide
Carfilzomib (2S,4S)-Diol (7R)-Isomer
CZM68

(S)-N-((S)-1-((2R,4R)-1,2-Dihydroxy-2,6-dimethyl-3-oxoheptan-4-ylamino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide
Carfilzomib (2R,4R)-Diol
CZM60

(S)-N-((S)-1-((2R,4S)-1,2-Dihydroxy-2,6-dimethyl-3-oxoheptan-4-ylamino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutan amido)pentanamide
CAS:1541172-75-1
Carfilzomib (2R,4S)-Diol
CZM51

(S)-N-((S)-1-((2S,4R)-1,2-Dihydroxy-2,6-dimethyl-3-oxoheptan-4-ylamino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutan amido)pentanamide
Carfilzomib (2S,4R)-Diol
CZM52

(S)-N-((S)-1-((2S,4S)-1,2-Dihydroxy-2,6-dimethyl-3-oxoheptan-4-ylamino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutan amido)pentanamide hydrochloride
Carfilzomib (2S,4S)-Diol HCl
CZM53H

(S)-N-((S)-1-((2S,4S)-1-Chloro-2-hydroxy-2,6-dimethyl-3-oxoheptan-4-ylamino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide
CAS:1541171-67-8
Carfilzomib RC 2
CZM82

(S)-N-(1-(2,6-Dimethylphenoxy)propan-2-yl)acetamide
CAS:160169-32-4
Mexiletine RC 5
MLT65

(S)-N-(1-(3-Hydroxy-3-methylbutanamido)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxamide
Bortezomib USP Impurity F Bortezomib Hydroxyketon
BTZ56

(S)-N-(1-(3-METHYLBUTANAMIDO)-1-OXO-3-PHENYLPROPAN-2-YL)PYRAZINE-2-CARBOXAMIDE
CAS:862894-96-0
Bortezomib RC 3
BTZ83

(S)-N-(1-(7-(But-2-ynyl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)piperidin-3-yl)formamide
Linagliptin RC 8 N-Formyl (S)-Linagliptin
LGT78

(S)-N-(1-(ISOPENTYLAMINO)-1-OXO-3-PHENYLPROPAN-2-YL)PYRAZINE-2-CARBOXAMIDE
CAS:1446194-56-4
Bortezomib Desboronic Impurity Bortezomib Impurit
BTZ48

(S)-N-(1-(Naphthalen-1-yl)ethyl)-3-(3-(trifluoromethyl) phenyl)propan-1-amine
CAS:694495-47-1
Cinacalcet USP RC D (Base) Cinacalcet (S)-Isomer
CCC24B

(S)-N-(1-(Naphthalen-1-yl)ethyl)-3-(3-(trifluoromethyl) phenyl)propan-1-amine hydrochloride
CAS:1217809-88-5
Cinacalcet USP RC D (HCl) Cinacalcet HCl (S)-Isom
CCC24H

(S)-N-(1-(Naphthalen-2-yl)ethyl)-3-(3-(trifluoromethyl)phenyl)propan-1-amine
CAS:1638501-43-5
Cinacalcet beta-Alkyl S-Isomer (Base)
CCC52B

(S)-N-(1-(Naphthalen-2-yl)ethyl)-3-(3-(trifluoromethyl)phenyl)propan-1-amine hydrochloride
CAS:2309431-65-8
Cinacalcet beta-Alkyl S-Isomer (HCl)
CCC52H

(S)-N-(1-AMINO-1-OXOBUTAN-2-YL)-4-CHLOROBUTANAMIDE
CAS:102767-31-7
Levetiracetam USP RC A
LET21

(S)-N-(1-Benzyloxycarbonyl-2-methylprop-1-yl)-N-[2'-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]amine
CAS:676129-93-4
Valsartan Desvaleryl Benzyl Impurity Des(oxopenty
VST53

(S)-N-(1-Carboxy-2-methylprop-1-yl)-N-[2'-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]amine
CAS:676129-92-3
Valsartan Desvaleryl Impurity Devaleryl Valsartan
VST51

(S)-N-(1-FORMAMIDO-1-OXO-3-PHENYLPROPAN-2-YL)PYRAZINE-2-CARBOXAMIDE
Bortezomib USP Impurity E Bortezomib N-Formyl Ana
BTZ55

(S)-N-(1-Methoxycarbonyl-2-methylprop-1-yl)-N-[2'-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]amine
CAS:1111177-24-2
Valsartan Desvaleryl Methyl Ester (Base)
VST52B

(S)-N-(1-Methoxycarbonyl-2-methylprop-1-yl)-N-[2'-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]amine HCl
CAS:1111177-20-8
Valsartan Desvaleryl Methyl Ester (HCl)
VST52H

(S)-N-(1-Oxopentyl)-N-[[2-(1H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-valine
CAS:137862-53-4
Valsartan
VST00

(S)-N-(2,6-Dimethylphenyl)-1-methylpiperidine-2-carboxamide hydrochloride
CAS:34333-71-6
Mepivacaine (S)-Isomer (HCl) Ropivacaine EP Impur
MVC50H

(S)-N-(2-(1-(3-ETHOXY-4-HYDROXYPHENYL)-2-(METHYLSULFONYL)ETHYL)-1,3-DIOXOISOINDOLIN-4-YL)ACETAMIDE
CAS:1384441-38-6
Apremilast O-Desmethyl
APM64

(S)-N-(2-(1-(3-Hydroxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl)-1,3-dioxoisoindolin-4-yl)acetamide
CAS:1384967-20-7
Apremilast O-Desethyl
APM63

(S)-N-(2-(5-Bromo-6-(vinyloxy)-2,3-dihydro-1H-inden-1-yl)ethyl)propionamide
CAS:1246820-28-9
Ramelteon RC 6
RMT76

(S)-N-(2-(5-Bromo-6-hydroxy-2,3-dihydro-1H-inden-1-yl)ethyl)propionamide
CAS:196597-84-9
Ramelteon RC 9
RMT79

(S)-N-(2-(5-Bromo-6-methoxy-2,3-dihydro-1H-inden-1-yl)ethyl)propionamide
CAS:196597-83-8
Ramelteon RC 10
RMT80

(S)-N-(2-(6-(Allyloxy)-5-bromo-2,3-dihydro-1H-inden-1-yl)ethyl)propionamide
CAS:196597-85-0
Ramelteon RC 7
RMT77

(S)-N-(2-(6-(Benzyloxy)-5-bromo-7-(2-hydroxyethyl)-2,3-dihydro-1H-inden-1-yl)ethyl)propionamide
CAS:1246820-32-5
Ramelteon RC 8
RMT78

(S)-N-(2-(6-Methoxy-2,3-dihydro-1H-inden-1-yl)ethyl)propionamide
CAS:178678-16-5
Ramelteon RC 14
RMT84

(S)-N-(2-(7-Allyl-5-bromo-6-hydroxy-2,3-dihydro-1H-inden-1-yl)ethyl)propionamide
CAS:196597-86-1
Ramelteon RC 5
RMT75

(S)-N-(2-(7-Allyl-6-(benzyloxy)-5-bromo-2,3-dihydro-1H-inden-1-yl)ethyl)propionamide
CAS:1246820-29-0
Ramelteon RC 1
RMT71

(S)-N-(3-Amino-2-hydroxypropyl)-N-(3-fluoro-4-(4-morpholinylphenyl) acetamide
CAS:333753-69-8
Linezolid Descarbonyl N-Desacetyl N-Acetyl Impurit
LNZ41B

(S)-N-(3-Amino-2-hydroxypropyl)-N-(3-fluoro-4-(4-morpholinylphenyl) acetamide hydrochloride
CAS:1391068-25-9
Linezolid Descarbonyl N-Desacetyl N-Acetyl Impurit
LNZ41H

(S)-N-(3-Amino-2-hydroxypropyl)-N-(3-fluoro-4-(4-morpholinylphenyl) acetamide oxalate
Linezolid Descarbonyl N-Desacetyl N-Acetyl Impurit
LNZ41X

(S)-N-(3-CHLORO-4-FLUOROPHENYL)-6-NITRO-7-(TETRAHYDROFURAN-3-YLOXY)QUINAZOLIN-4-AMINE
CAS:314771-88-5
Afatinib Impurity A
AFN61

(S)-N-(4-(3-Chloro-4-fluorophenylamino)-7-((R)-tetrahydrofuran-3-yloxy)quinazolin-6-yl)-4-(dimethylamino)-3-hydroxybutanamide
CAS:2413212-21-0
Afatinib RC 8
AFN78

(S)-N-(4-(3-Chloro-4-fluorophenylamino)-7-(tetrahydrofuran-3-yloxy)quinazolin-6-yl)but-3-enamide
CAS:2413212-17-4
Afatinib RC 7
AFN77

(S)-N-(4-Hydroxy-1-oxopentyl)-N-[[2-(1H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-valine
CAS:188259-69-0
Valsartan 4-Hydroxy Impurity Valsartan 4-Hydroxyv
VST50

(S)-N-(piperidin-2-ylmethyl)-2,5-bis(2,2,2-trifluoroethoxy)benzamide
CAS:99495-92-8
Flecainide (S)-Isomer (S)-Flecainide
FCN53

(S)-N-[[3-[3-Fluoro-4-(4-morpholinyl)phenyl]-2-oxo-5-oxazolidinyl] methyl] phthalimide
CAS:168828-89-5
Linezolid Desacetamide Phthalimide (S)-Isomer Lin
LNZ56

(S)-N-[2-[2,3-DIHYDRO-6-HYDROXY-7-(2-HYDROXYETHYL)-1H-INDEN-1-YL]ETHYL]PROPANAMIDE
CAS:196597-88-3
Ramelteon Diol Impurity
RMT42

(S)-N-{(2R,4R,5S)-5-[2-(2,6-Dimethylphenoxy)acetamido]-4-hydroxy-1,6- diphenylhexan-2-yl}-3-methyl-2-[2-oxotetrahydropyrimidin-1(2H)-yl]butanamide
Lopinavir EP Impurity M Lopinavir (2R,4R)-Diaster
LPN13

(S)-N-{(2S,4R,5S)-5-[2-(2,6-Dimethylphenoxy)acetamido]-4-hydroxy-1,6-diphenylhexan-2-yl}-3-methyl-2-[2-oxotetrahydropyrimidin-1(2H)-yl]butanamide
CAS:1798014-18-2
Lopinavir EP Impurity N Lopinavir (4R)-Epimer (US
LPN14

(S)-N-{[3-(3-Fluoro-4-morpholinophenyl)-2-oxooxazolidin-5-yl]methyl} thioacetamide
CAS:216868-57-4
Linezolid USP RC B ThioLinezolid N-Deacetyl Line
LNZ22

(S)-N-Benzyl-N-(2-chloroethyl)-1-phenoxypropan-2-amine
CAS:71799-90-1
Phenoxybenzamine (S)-Isomer
PBZ62B

(S)-N-Benzyl-N-(2-chloroethyl)-1-phenoxypropan-2-amine hydrochloride
CAS:32378-29-3
Phenoxybenzamine (S)-Isomer (HCl)
PBZ62H

(S)-N-BUTYRYL-N-([2'-(1H-TETRAZOLE-5-YL)BIPHEN-4-YL]METHYL)-VALINE
CAS:952652-79-8
Valsartan USP RC B Valsartan EP Impurity C Valsa
VST22

(S)-N-Methyl-3-(naphthalen-1-yloxy)-1-phenylpropan-1-amine
CAS:147199-39-1
Dapoxetine RC 4 Dapoxetine (S)-Isomer N-Demethyl
DXE64

(S)-N-Methyl-4-nitro-N-(2-(5-((2-oxooxazolidin-4-yl)methyl)-1H-indol-3-yl)ethyl)benzenesulfonamide
CAS:1346602-02-5
Zolmitriptan Sulfonamide Impurity
ZMT58B

(S)-N-Methyl-N-(1-phenylpropan-2-yl)prop-2-yn-1-amine
CAS:4528-51-2
Selegiline EP Impurity E (Base)
SLG05B

(S)-N-Methyl-N-(1-phenylpropan-2-yl)prop-2-yn-1-amine hydrochloride
CAS:4528-52-3
Selegiline EP Impurity E (HCl)
SLG05H

(S)-N-tert-Butyl-2,3-bis(4-morpholino-1,2,5-thiadiazol-3-yloxy)propan-1-amine
CAS:1391068-18-0
Timolol Impurity 8
TML58

(S)-N-VALERYL-N-([2'-(1H-TETRAZOLE-5-YL)BIPHEN-4-YL]METHYL)-VALINE BENZYL ESTER
CAS:137863-20-8
Valsartan USP RC C Valsartan EP Impurity B Valsa
VST23

(S)-N-Valeryl-N-([2'-(1H-tetrazole-5-yl)biphen-5-yl]methyl)-valine methyl ester
CAS:137863-17-3
Valsartan USP RC E Valsartan Methyl Ester
VST25

(S)-N-Valeryl-N-([2'-(1H-tetrazole-5-yl)biphen-6-yl]methyl)-valine ethyl ester
CAS:1111177-30-0
Valsartan Ethyl Ester
VST32

(S)-N-Valeryl-N-([2'-(1H-tetrazole-5-yl)biphen-7-yl]methyl)-valine isopropyl ester
CAS:1245820-09-0
Valsartan Isopropyl Ester
VST33

(S)-N-Valeryl-N-([2'-(2-trityl-tetrazol-5-yl)biphenyl-4-yl]methyl)-valine benzyl ester
Valsartan Benzyl Ester N2-Trityl Analog N2-Trityl
VST46

(S)-N-Valeryl-N-([2'-(2-trityl-tetrazol-5-yl)biphenyl-4-yl]methyl)-valine ethyl ester
Valsartan Ethyl Ester N2-Trityl Analog N2-Trityl
VST45

(S)-N-Valeryl-N-([2'-(2-trityl-tetrazol-5-yl)biphenyl-4-yl]methyl)-valine methyl ester
CAS:883223-10-7
Valsartan Methyl Ester N2-Trityl Analog N2-Trityl
VST41

(S)-N-Valeryl-N-([2'-(2-trityl-tetrazol-5-yl)biphenyl-4-yl]methyl)valine
CAS:783369-52-8
Valsartan N2-Trityl Impurity
VST42

(S)-N1-METHYL-N2-((2-OXO-3-(4-(3-OXOMORPHOLINO)PHENYL)OXAZOLIDIN-5-YL)METHYL)PHTHALAMIDE
Rivaroxaban Methylaminocarbonyl Impurity
RVR34

(S)-N2-(METHOXYMETHYL)-N6-PROPYL-4,5,6,7-TETRAHYDROBENZO[D]THIAZOLE-2,6-DIAMINE
Pramipexole N2-Methoxymethyl Impurity
PMP62B

(S)-N2-Methylene-N6-propyl-4,5,6,7-tetrahydrobenzo[d]thiazole-2,6-diamine
Pramipexole N2-Methylene Impurity
PMP63B

(S)-N4-(3,4-Difluorophenyl)-7-(tetrahydrofuran-3-yloxy)quinazoline-4,6-diamine
CAS:2044709-72-8
Afatinib RC 12
AFN82

(S)-N4-(3-Chlorophenyl)-7-(tetrahydrofuran-3-yloxy)quinazoline-4,6-diamine
CAS:2413212-09-4
Afatinib RC 6
AFN76

(S)-N4-(4-Fluorophenyl)-7-(tetrahydrofuran-3-yloxy)quinazoline-4,6-diamine
Afatinib Diamine Deschloro Impurity
AFN52

(S)-N4-Phenyl-7-(tetrahydrofuran-3-yloxy)quinazoline-4,6-diamine
CAS:2413212-08-3
Afatinib RC 5
AFN75

(S)-N6,N6-Dipropyl-4,5,6,7-tetrahydrobenzothiazole-2,6-diamine
CAS:1147937-31-2
Pramipexole N6-Propyl Impurity
PMP47B

(S)-N6-Nitroso-N6-propyl-4,5,6,7-tetrahydrobenzo[d]thiazole-2,6-diamine
Pramipexole N-Nitroso Impurity
PMP48

(S)-PHENYL 1-PHENYL-3,4-DIHYDROISOQUINOLINE-2(1H)-CARBOXYLATE
CAS:1203447-95-3
Solifenacin Impurity 1
SLF61

(S)-Phenyl methyl(3-(naphthalen-1-yloxy)-3-(thiophen-2-yl)propyl)carbamate
CAS:947686-09-1
Duloxetine Phenyl Carbamate (S)-Isomer
DLX83

(S)-PYRROLIDIN-2-YLMETHANOL
CAS:23356-96-9
Avanafil RC 5
AVF55

(S)-Pyrrolidine-2-carboxamide L-Prolinamide
CAS:7531-52-4
Vildagliptin Impurity 3
VDG63

(S)-Quinuclidin-3-yl 2-benzoylphenethylcarbamate
Solifenacin Benzoyl (S)-Quinuclidinyl Impurity
SLF45B

(S)-S-3-Chloro-2-methyl-3-oxopropyl ethanethioate
CAS:69570-39-4
Captopril RC 1
CPR51

(S)-tert-Butyl 1-((S)-2-((S)-1-butoxy-1-oxo-4-phenylbutan-2-ylamino)propanoyl)pyrrolidine-2-carboxylate
Enalaprilat Butyl t-Butyl Diester
EPX55

(S)-tert-Butyl 2-{(S)-2-[(S)-1-ethoxy-1-oxo-4-phenylbutan-2-ylamino]propanoyl}-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylate
CAS:103733-39-7
Moexipril USP RC C (Base) Moexipril tert-Butyl Es
MXP23B

(S)-tert-Butyl 2-{(S)-2-[(S)-1-ethoxy-1-oxo-4-phenylbutan-2-ylamino]propanoyl}-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylate maleate
CAS:103733-40-0
Moexipril USP RC C (Maleate) Moexipril tert-Butyl
MXP23M

(S)-TERT-BUTYL 2-CARBAMOYLPYRROLIDINE-1-CARBOXYLATE
CAS:35150-07-3
Pibrentasvir Impurity 3
PBV53

(S)-tert-Butyl 3-((S)-2-((S)-1-(benzyloxy)-1-oxo-4-phenylbutan-2-ylamino)propanoyl)-1-methyl-2-oxoimidazolidine-4-carboxylate
CAS:89460-20-8
Imidapril Benzyl Ester t-Butyl Ester
IMD51

(S)-tert-Butyl 3-((S)-2-((S)-1-ethoxy-1-oxo-4-phenylbutan-2-ylamino)propanoyl)-1-methyl-2-oxoimidazolidine-4-carboxylate
CAS:89371-38-0
Imidapril t-Butyl Ester
IMD53

(S)-TERT-BUTYL 3-AMINOPIPERIDINE-1-CARBOXYLATE
CAS:625471-18-3
Linagliptin RC 4
LGT74

(S)-TERT-BUTYL 3-HYDROXYPIPERIDINE-1-CARBOXYLATE
CAS:143900-44-1
Ibrutinib Impurity 7
IBT57

(S)-tert-Butyl 6-((1-(benzyloxy)-3-(3-(methylsulfonyl)phenyl)-1-oxopropan-2-yl)carbamoyl)-5,7-dichloro-3,4-dihydroisoquinoline-2(1H)-carboxylate
CAS:1194550-61-2
Lifitegrast RC 6
LGS66

(S)-tert-Butyl 6-(6-(benzyloxycarbonyl)hexanamido)-2-(bis(2-tert-butoxy-2-oxoethyl)amino)hexanoate
CAS:1391068-21-5
Aminocaproic Nitrilotriacetic Acid Tri-t-Butyl Est
ACP62

(S)-tert-Butyl 6-(6-aminohexanamido)-2-(bis(2-tert-butoxy-2-oxoethyl)amino)hexanoate
CAS:1218921-96-0
Aminocaproic Nitrilotriacetic Acid Tri-t-Butyl Est
ACP61

(S)-TERT-BUTYL 6-CHLORO-5-HYDROXY-3-OXOHEXANOATE
CAS:154026-92-3
Rosuvastatin Impurity 38
RSVD8

(S)-TERT-BUTYL 6-CYANO-5-HYDROXY-3-OXOHEXANOATE
CAS:312745-90-7
Atorvastatin Impurity 8
ATVX8

(S)�2�[(Methoxycarbonyl)amino]�3,3�dimethylbutanoic�acid
CAS:162537-11-3
Atazanavir EP Impurity K Atazanavir USP RC A
ATZ11

(S, E)-7-[2-(4-Fluorophenyl)-5-isopropyl-3-phenyl-4-[(phenylamino) carbonyl]-1H-pyrrol-1-yl]-5-hydroxy-2-heptenoic acid
CAS:1105067-93-3
Atorvastatin EP Impurity J (Acid) Atorvastatin 3-
ATV10A

(S, E)-7-[2-(4-Fluorophenyl)-5-isopropyl-3-phenyl-4-[(phenylamino) carbonyl]-1H-pyrrol-1-yl]-5-hydroxy-2-heptenoic acid ethyl ester
Atorvastatin 2,3-Anhydro Ethyl Ester 2,3-Anhydro
ATV34

(S, E)-7-[2-(4-Fluorophenyl)-5-isopropyl-3-phenyl-4-[(phenylamino) carbonyl]-1H-pyrrol-1-yl]-5-hydroxy-2-heptenoic acid sodium salt
Atorvastatin EP Impurity J (Sodium) Atorvastatin
ATV10N

(S,E)-1-(5-(Benzyloxy)-2-(oxiran-2-ylmethoxy)phenyl)-3-phenylprop-2-en-1-one
CAS:93885-31-5
Propafenone RC 4
PRP64

(S,E)-2-(4-(2,4-DICHLOROPHENYL)-1,3-DITHIOLAN-2-YLIDENE)-2-(1H-IMIDAZOL-1-YL)ACETONITRILE
CAS:256424-63-2
Luliconazole (S,E)-Isomer
LZL53

(S,E)-4-((4-((3-Chloro-4-fluorophenyl)amino)-7-((tetrahydrofuran-2-yl)oxy)quinazolin-6-yl)amino)-N,N-dimethyl-4-oxobut-2-en-1-amine Oxide
Afatinib N-Oxide
AFN50

(S,E)-4-(DIMETHYLAMINO)-N-(4-((4-FLUOROPHENYL)AMINO)-7-((TETRAHYDROFURAN-3-YL)OXY)QUINAZOLIN-6-YL)BUT-2-ENAMIDE
Afatinib 3-Deschloro Impurity
AFN53

(S,E)-4-(Dimethylamino)-N-(4-hydroxy-7-(tetrahydrofuran-3-yloxy)quinazolin-6-yl)but-2-enamide
CAS:1456696-14-2
Afatinib Impurity J
AFN70

(S,E)-4-Bromo-N-(4-(3-chloro-4-fluorophenylamino)-7-(tetrahydrofuran-3-yloxy)quinazolin-6-yl)but-2-enamide
CAS:1637254-93-3
Afatinib Impurity I Afatinib Bromo Analog
AFN69

(S,E)-4-Hydroxy-3-(2-((1R,4aS,5R,6R,8aS)-6-hydroxy-5-(hydroxymethyl)-5,8a-dimethyl-2-methylene-decahydronaphthalen-1-yl)ethylidene)-dihydrofuran-2(3H)-one
CAS:5508-58-7
Andrographolide
AGF00

(S,E)-6-Chloro-4-(2-cyclopropylvinyl)-4-(trifluoromethyl)-2H-3,1-benzoxazin-2-one
CAS:440124-96-9
Efavirenz IP Impurity B Efavirenz USP RC B Efavi
EFV52

(S,E)-methyl 2-(3-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(methylsulfonyloxy)propyl)benzoate
CAS:807638-71-7
Montelukast Impurity 5
MTL85

(S,E)-Methyl 2-(3-(tert-butyldimethylsilyloxy)-3-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)propyl)benzoate
CAS:1772578-77-4
Montelukast Impurity 4
MTL84

(S,E)-N-(4-(3,4-Dichlorophenylamino)-7-(tetrahydrofuran-3-yloxy)quinazolin-6-yl)-4-(dimethylamino)but-2-enamide
CAS:2223677-63-0
Afatinib Impurity E Afatinib 3,4-Dichloro Analog
AFN65

(S,E)-N-(4-(3,4-Difluorophenylamino)-7-(tetrahydrofuran-3-yloxy)quinazolin-6-yl)-4-(dimethylamino)but-2-enamide
CAS:2223677-62-9
Afatinib Impurity F 3-Fluoro-Afatinib Afatinib 3
AFN66

(S,E)-N-(4-(3-CHLORO-4-FLUOROPHENYLAMINO)-7-(TETRAHYDROFURAN-3-YLOXY)QUINAZOLIN-6-YL)BUT-2-ENAMIDE
CAS:2223677-64-1
Afatinib Impurity H Des(dimethylamino) Afatinib
AFN68

(S,E)-N-(4-(4-Chloro-3-fluorophenylamino)-7-(tetrahydrofuran-3-yloxy)quinazolin-6-yl)-4-(dimethylamino)but-2-enamide
CAS:2406199-31-1
Afatinib Impurity G Afatinib 3-Fluoro-4-Chloro An
AFN67

(S,Z)-2-(4-(2,4-Dichlorophenyl)-1,3-dithiolan-2-ylidene)-2-(1H-imidazol-1-yl)acetonitrile
CAS:2522922-36-5
Luliconazole (S,Z)-Isomer
LZL54

(S,Z)-3-(Chloro((2-hydroxy-3-(piperidin-1-yl)propoxy)imino)methyl)pyridine 1-oxide maleate
CAS:289893-28-3
Arimoclomol (S)-Isomer Maleate (S)-Arimoclomol Ma
AXX50M

(S,Z)-4-(3,4-Dichlorophenyl)-3,4-dihydronaphthalen-1(2H)-one oxime
CAS:152642-35-8
Sertraline Oxime
STL59

(S,Z)-Ethyl 3-(1-hydroxypropan-2-ylamino)-2-(2,3,4,5-tetrafluorobenzoyl)acrylate
CAS:110548-02-2
Levofloxacin Impurity 24
LFX84

(S,Z)-Ethyl 3-(1-hydroxypropan-2-ylamino)-2-(2,3,4-trifluorobenzoyl)acrylate
CAS:601490-35-1
Levofloxacin Impurity 27
LFX87

(S,Z)-Methyl 3-(1-hydroxypropan-2-ylamino)-2-(2,3,4,5-tetrafluorobenzoyl)acrylate
CAS:1213269-48-7
Levofloxacin Impurity 25
LFX85

(S,Z)-N-(4-((3-CHLORO-4-FLUOROPHENYL)AMINO)-7-((TETRAHYDROFURAN-3-YL)OXY)QUINAZOLIN-6-YL)-4-(DIMETHYLAMINO)BUT-2-ENAMIDE
CAS:1680184-59-1
Afatinib Impurity D Afatinib (Z)-Isomer
AFN64

(SR)-1-((RS)-2-((RS)-1-Carboxy-3-phenylpropylamino)propanoyl)pyrrolidine-2-carboxylic acid
Enalaprilat EP Impurity B
EPX02

(SR)-1-((RS)-2-((SR)-1-Carboxy-3-phenylpropylamino)propanoyl)pyrrolidine-2-carboxylic acid
Enalaprilat EP Impurity D
EPX04

(SR)-1-((SR)-1-((SR)-2-((SR)-1-Carboxy-3-phenylpropylamino)propanoyl)pyrrolidine-2-carbonyl)pyrrolidine-2-carboxylic acid
Enalaprilat EP Impurity E
EPX05

(SR)-1-((SR)-2-((RS)-1-Carboxy-3-phenylpropylamino)propanoyl)pyrrolidine-2-carboxylic acid
Enalaprilat EP Impurity C
EPX03

(SR)-2-((SR)-1-Carboxyethylamino)-4-phenylbutanoic acid
CAS:112318-07-7
Enalaprilat EP Impurity A
EPX01

(SR)-2-((SR)-1-Ethoxy-1-oxo-4-phenylbutan-2-ylamino)propanoic acid
CAS:90988-18-4
Enalaprilat EP Impurity F
EPX06

(SR)-Ethyl 2-((3RS,8aSR)-3-methyl-1,4-dioxo-hexahydropyrrolo[1,2-a]pyrazin-2(1H)-yl)-4-phenylbutanoate
CAS:284677-66-3
Enalaprilat EP Impurity G
EPX07

(�R)-�-Cyclopentyl-4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazole-1-propanenitrile
CAS:941678-49-5
Ruxolitinib (Base)
RLT00B

(�R)-�-Cyclopentyl-4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazole-1-propanenitrile phosphate salt
CAS:1092939-17-7
Ruxolitinib (Phosphate) Ruxolitinib Phosphate
RLT00P

(�R,dR)-9-Fluoro-2,3-dihydro-�,d-dihydroxy-3-(1-methylethyl)-2-oxo-3-[(phenylamino)carbonyl]-1H-dibenz[e,g]indole-1-heptanoic acid calcium salt
CAS:148127-12-2
Atorvastatin Pyrrolidone Phenanthrene Calcium Ato
ATV68C

(�R,dR)-9-Fluoro-2,3-dihydro-�,d-dihydroxy-3-(1-methylethyl)-2-oxo-3-[(phenylamino)carbonyl]-1H-dibenz[e,g]indole-1-heptanoic acid methyl ester
CAS:906552-20-3
Atorvastatin Pyrrolidone Phenanthrene Methyl Ester
ATV88

(�R,dR,1S,2S,6S,8S,8aR)-1,2,6,7,8,8a-Hexahydro-�,d,6-trihydroxy-2-methyl-8-[(2S)-2-methyl-1-oxobutoxy]-1-naphthaleneheptanoic acid 1,1,3,3-tetramethylbutylamine salt
CAS:151006-14-3
Pravastatin TMBA Salt Pravastatin 1,1,3,3-Tetrame
PVS78

(�R,dR,1S,2S,6S,8S,8aR)-1,2,6,7,8,8a-Hexahydro-�,d,6-trihydroxy-2-methyl-8-[(2S)-2-methyl-1-oxobutoxy]-1-naphthaleneheptanoic acid sodium salt
CAS:81131-70-6
Pravastatin sodium
PVS00N

(�R,dR,1S,2S,8S,8aR)-1,2,6,7,8,8a-Hexahydro-�,d-dihydroxy-2-methyl-8-[(2S)-2-methyl-1-oxobutoxy]-6-oxo-1-naphthaleneheptanoic acid
CAS:201423-59-8
Pravastatin 6-Oxo Impurity (Acid)
PVS60A

(�R,dR,1S,2S,8S,8aR)-1,2,6,7,8,8a-Hexahydro-�,d-dihydroxy-2-methyl-8-[(2S)-2-methyl-1-oxobutoxy]-6-oxo-1-naphthaleneheptanoic acid sodium salt
Pravastatin 6-Oxo Impurity (Na)
PVS60N

(Thiophen-3-yl)acetic acid 3-Thiopheneacetic acid
CAS:6964-21-2
Ticarcillin EP Impurity B
TCC02

(TRIFLUOROMETHOXY)BENZENE
CAS:456-55-3
Pretomanid Impurity 1
PTD51

(Z)-(2,4-DIFLUOROPHENYL)(PIPERIDIN-4-YL)METHANONE OXIME
CAS:84163-46-2
Iloperidone RC 1 (Base)
ILP61B

(Z)-(2,4-DIFLUOROPHENYL)(PIPERIDIN-4-YL)METHANONE OXIME HYDROCHLORIDE
CAS:135634-18-3
Iloperidone RC 1 (HCl)
ILP61H

(Z)-(2,6-Difluorophenyl)(piperidin-4-yl)methanone oxime
CAS:691007-05-3
Risperidone RC 1
RSP71B

(Z)-(6R,7R)-7-[[(2R)-2-Amino-2-(4-hydroxyphenyl)acetyl]amino]-8-oxo-3-(1-propen-1-yl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
CAS:121412-77-9 (anhydrous)
Cefprozil (Z)-Isomer (Anhydrous)
CFZ53A

(Z)-(6R,7R)-7-[[(2R)-2-Amino-2-(4-hydroxyphenyl)acetyl]amino]-8-oxo-3-(1-propen-1-yl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid monohydrate
CAS:114876-72-1 (monohydrate)
Cefprozil (Z)-Isomer (Monohydrate)
CFZ53H

(Z)-(Diazene-1,2-diylbis(2-(bromomethyl)-4,1-phenylene))diboronic acid
Tavaborole Impurity 5
TVB65

(Z)-(Furan-2-yl)(methoxyimino)acetic acid
CAS:39684-61-2
Cefuroxime Sodium EP Impurity I (Acid)
CRS09A

(Z)-(Furan-2-yl)(methoxyimino)acetic acid ammonium salt
CAS:97148-39-5
Cefuroxime Sodium EP Impurity I (Ammonium Salt)
CRS09N

(Z)-?-[[4-[2-(Dimethylamino)ethoxy]phenyl][4-(phenylmethoxy)phenyl]methylene]-benzenepropanol
CAS:176671-78-6
Tamoxifen 4-Benzyloxy �-Hydroxy Impurity
TMX74B

(Z)-[5-Fluoro-2-methyl-1-[4-(methylsulfinyl)benzylidene]-1H-inden-3-yl]acetic acid
CAS:38194-50-2
Sulindac
SDC00

(Z)-[5-Fluoro-2-methyl-1-[4-(methylsulfonyl)-benzylidene]-1H-inden-3-yl]acetic acid
CAS:59973-80-7
Sulindac EP Impurity B Sulindac USP RC B (Z)-Sul
SDC02

(Z)-[5-Fluoro-2-methyl-1-[4-methylsulfanyl)-benzylidene]-1H-inden-3-yl]acetic acid
CAS:49627-27-2
Sulindac EP Impurity C Sulindac USP RC C Sulinda
SDC03

(Z)-1,2-Bis(4-(3-carbamoyl-1-(4-methoxyphenyl)-7-oxo-4,5-dihydro-1H-pyrazolo[3,4-c]pyridin-6(7H)-yl)phenyl)diazene oxide
Apixaban Impurity 7 Apixaban Dimer N-Oxide
APX67

(Z)-1-((2-((4-(2-((FURAN-2-YLMETHYL)SULFINYL)ACETAMIDO)BUT-2-EN-1-YL)OXY)PYRIDIN-4-YL)METHYL)PIPERIDINE 1-OXIDE
CAS:169899-18-7
Lafutidine N-Oxide
LFT53

(Z)-1-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-yl)ethanone O-2,4-dichlorobenzyl oxime
CAS:64211-45-6
Oxiconazole
OCZ00B

(Z)-1-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-yl)ethanone O-2,4-dichlorobenzyl oxime nitrate
CAS:64211-46-7
Oxiconazole nitrate
OCZ00N

(Z)-1-(2,4-DICHLOROPHENYL)-2-(1H-IMIDAZOL-1-YL)ETHANONE OXIME
CAS:64211-06-9 (Z) 100220-48-2 (Z/E)
Oxiconazole USP RC B
OCZ22

(Z)-1-(3-Ethyl-4-(hydroxymethyl)phenyl)ethanone-O-(4-cyclohexyl-3-(trifluoromethyl)benzyl)oxime
CAS:1418144-67-8
Siponimod RC 2
SNM62

(Z)-1-(4-Methoxystyryl)-3,5-dimethoxybenzene
CAS:94608-23-8
Resveratrol Trimethyl Ether cis-Isomer Resveratro
RVT65

(Z)-1-(9-(4-Chlorobenzylidene)-2,7-dichloro-9H-fluoren-4-yl)-2-(butylamino)ethanol
CAS:355841-11-1
Lumefantrine Desbutyl Impurity
LFN50

(Z)-1-(Benzylideneamino)imidazolidine-2,4-dione
CAS:2827-57-8
Hydantoin 1-Benzylideneamino
HDT53

(Z)-1-(DIPHENYLMETHYL)-4-(3-PHENYLPROP-2-ENYL)PIPERAZINE
CAS:750512-44-8
Cinnarizine EP Impurity B Cinnarizine cis-Isomer
CNR02

(Z)-1-Ethylidene-6-methoxy-2,3-dihydro-1H-indene
CAS:468104-14-5
Ramelteon RC 18
RMT88

(Z)-1-Propenylphosphonic acid
CAS:25383-06-6
Fosfomycin Cis-Propenyl Phosphonic Acid
FFM50A

(Z)-1-Propenylphosphonic acid (R)-(+)-a-methylbenzylamine salt
CAS:933443-26-6
Fosfomycin Cis-Propenyl Phosphonic Acid Methylbenz
FFM50M

(Z)-11-(3-(DIMETHYLAMINO)PROPYLIDENE)-6,11-DIHYDRODIBENZO[B,E]OXEPINE-2-CARBALDEHYDE
CAS:2519517-77-0
Olopatadine Carbaldehyde (Base) Olopatadine Aldeh
OLP32B

(Z)-11-(3-(DIMETHYLAMINO)PROPYLIDENE)-6,11-DIHYDRODIBENZO[B,E]OXEPINE-2-CARBALDEHYDE HYDROCHLORIDE
Olopatadine Carbaldehyde (HCl) Olopatadine Aldehy
OLP32H

(Z)-2,6-Dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic Acid 2-Methoxyethyl 3-Phenyl-2-propenyl Ester
CAS:146845-35-4
Cilnidipine Dehydro (Z)-Isomer
CND52

(Z)-2-(((1-(2-Aminothiazol-4-yl)-2-((2-hydroxy-2-sulfonatoethyl)amino)-2-oxoethylidene)amino)oxy)-2-methylpropanoate disodium salt
Ceftazidime Hydroxyethyl Impurity
CFT40N

(Z)-2-((2-(4-(1,2-Diphenylbut-1-enyl)phenoxy)ethyl)(methyl)amino)ethanol
CAS:77214-91-6
Tamoxifen N-Hydroxyethyl Analog
TMX63B

(Z)-2-((6S,8S,9R,10S,11S,13S,14S,16R)-2-chloro-6,9-difluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-7,8,9,11,12,13,15,16-octahydro-3H-cyclopenta[a]phenanthren-17(6H,10H,14H)-ylidene)-2-hydroxyacetaldehyde
CAS:67212-85-5
Halometasone RC 3
HMT63

(Z)-2-((6S,8S,9R,10S,11S,13S,14S,16R)-6,9-Difluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-7,8,9,11,12,13,15,16-octahydro-3H-cyclopenta[a]phenanthren-17(6H,10H,14H)-ylidene)-2-hydroxyacetaldehyde
CAS:28400-50-2
Flumethasone Impurity 7 ?17-Flumethasone 21-Aldeh
FMP57

(Z)-2-({[(2-Amino-4-thiazolyl){[(2S,3S)-2-methyl-4-oxo-3-azetidinyl] carbamoyl} methylene]amino}oxy)-2-methylpropionic acid
CAS:102579-59-9
Aztreonam Desulfated Impurity (Base) Aztreonam US
AZT41B

(Z)-2-({[(2-Amino-4-thiazolyl){[(2S,3S)-2-methyl-4-oxo-3-azetidinyl] carbamoyl} methylene]amino}oxy)-2-methylpropionic acid trifluoroacetic acid salt
Aztreonam Desulfated Impurity (TFA Salt) Aztreona
AZT41T

(Z)-2-(1-(2-CYCLOPROPYL-1-(2-FLUOROPHENYL)-2-OXOETHYL)-4-MERCAPTOPIPERIDIN-3-YLIDENE)ACETIC ACID
CAS:204204-98-8
Prasugrel R-138727 Metabolite Prasugrel Thiol Ana
PRS55

(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)-N-{(3RS,5aR,6R)-3-methyl-1,7-dioxo-1,3,4,5a,6,7-hexahydroazeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl}acetamide
CAS:946573-41-7
Cefdinir Lactone (USP) Cefdinir Impurity E
CFD55

(Z)-2-(2-AMINOTHIAZOL-4-YL)-2-(HYDROXYIMINO)-N-{[(2RS,5RS)-5-METHYL-7-OXO-2,4,5,7-TETRAHYDRO-1H-FURO[3,4-D][1,3]THIAZIN-2-YL]METHYL}ACETAMIDE
CAS:178949-04-7
Cefdinir Decarboxy Open Ring Lactone (Base)
CFD58B

(Z)-2-(2-AMINOTHIAZOL-4-YL)-2-(HYDROXYIMINO)-N-{[(2RS,5RS)-5-METHYL-7-OXO-2,4,5,7-TETRAHYDRO-1H-FURO[3,4-D][1,3]THIAZIN-2-YL]METHYL}ACETAMIDE DIHYDROCHLORIDE
Cefdinir Decarboxy Open Ring Lactone (2HCl)
CFD58H

(Z)-2-(2-Aminothiazol-4-yl)-2-(methoxyimino)-N-((6R,7R)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-en-7-yl)acetamide
Ceftizoxime RC 12
CFX72

(Z)-2-(2-AMINOTHIAZOL-4-YL)-2-(METHOXYIMINO)ACETIC ACID
CAS:65872-41-5
Ceftiofur Aminothiazolyl Oxime Cefepime EP Impuri
CTF51

(Z)-2-(2-Aminothiazol-4-yl)-N-((5aR,6R)-1,7-dioxo-1,3,4,5a,6,7-hexahydroazeto[2,1-b]thieno[3,4-d][1,3]thiazin-6-yl)-2-(methoxyimino)acetamide
CAS:120882-23-7
Ceftiofur Thiolactone
CTF57

(Z)-2-(2-Aminothiazol-4-yl)-N-(2,2-dihydroxyethyl)-2-(hydroxyimino) acetamide
CAS:178422-40-7
Cefdinir Thiazolylacetyl Glycine Oxime Acetal Impu
CFD56

(Z)-2-(2-Aminothiazol-4-yl)-N-(2,2-dihydroxyethyl)-2-(methoxyimino)acetamide
Ceftizoxime RC 8
CFX68

(Z)-2-(3-(2-(4-(6-FLUOROBENZO[D]ISOXAZOL-3-YL)PIPERIDIN-1-YL)ETHYL)-2-METHYL-4-OXO-7,8-DIHYDRO-4H-PYRIDO[1,2-A]PYRIMIDIN-9(6H)-YLIDENE)ACETIC ACID
Risperidone Acetic Acid (Z)-Isomer
RSP52

(Z)-2-(3-(Pyrrolidin-1-yl)-1-p-tolylprop-1-enyl)pyridine hydrochloride
CAS:51657-91-1
Triprolidine HCl (Z)-Isomer cis-Triprolidine HCl
TDN50H

(Z)-2-(4-(1,2-Diphenylbuta-1,3-dienyl)phenoxy)ethanol
Ospemifene Vinyl Impurity
OPF54

(Z)-2-(4-(2-Chloro-1,2-diphenylvinyl)phenoxy)-N,N-diethylethanamine
CAS:15690-55-8
Clomifene (Z)-Isomer (Base) cis-Clomifene
CMF60B

(Z)-2-(4-(2-Chloro-1,2-diphenylvinyl)phenoxy)-N,N-diethylethanamine citrate
CAS:7619-53-6
Clomifene (Z)-Isomer (Citrate) cis-Clomifene Citr
CMF60C

(Z)-2-(4-(2-Chloro-1,2-diphenylvinyl)phenoxy)-N,N-diethylethanamine hydrochloride
CAS:14158-66-8
Clomifene (Z)-Isomer (HCl) cis-Clomifene HCl
CMF60H

(Z)-2-(4-(2-Chloro-1,2-diphenylvinyl)phenoxy)-N,N-diethylethanamine oxide
Clomifene N-Oxide (Z)-Isomer Clomiphene N-Oxide (
CMF57B

(Z)-2-(4-(4-Bromo-1,2-diphenylbut-1-enyl)phenoxy)ethanol
Ospemifene Bromo Impurity
OPF55

(Z)-2-(Furan-2-ylmethylsulfinyl)-N-(4-hydroxybut-2-enyl)acetamide
CAS:169899-15-4
Lafutidine RC 1
LFT61

(Z)-2-(Furan-2-ylmethylsulfonyl)-N-(4-(4-(piperidin-1-ylmethyl)pyridin-2-yloxy)but-2-enyl)acetamide
CAS:174583-84-7
Lafutidine Sulfone
LFT55

(Z)-2-[[[(2-Amino-4-thiazolyl)[[(2S,3S)-2-methyl-4-oxo-1-sulfo-3-azetidinyl] carbamoyl]methylene]amino]oxy]-2-methylpropionamide
CAS:1219444-93-5
Aztreonam Amide (Acid)
AZT40A

(Z)-2-[[[(2-Amino-4-thiazolyl)[[(2S,3S)-2-methyl-4-oxo-1-sulfo-3-azetidinyl] carbamoyl]methylene]amino]oxy]-2-methylpropionamide sodium salt
Aztreonam Amide (Sodium Salt)
AZT40N

(Z)-2-[[[(2-Amino-4-thiazolyl)[[(2S,3S)-2-methyl-4-oxo-1-sulfo-3-azetidinyl] carbamoyl]methylene]amino]oxy]-2-methylpropionic acid
CAS:78110-38-0
Aztreonam (Anhydrous)
AZT00A

(Z)-2-[[[(2-Amino-4-thiazolyl)[[(2S,3S)-2-methyl-4-oxo-1-sulfo-3-azetidinyl] carbamoyl]methylene]amino]oxy]-2-methylpropionic acid ethyl ester
CAS:102579-57-7
Aztreonam Ethyl Ester Aztreonam USP Impurity F
AZT43

(Z)-2-[[[(2-Amino-4-thiazolyl)[[(2S,3S)-2-methyl-4-oxo-1-sulfo-3-azetidinyl] carbamoyl]methylene]amino]oxy]-2-methylpropionic acid isopropyl ester
Aztreonam Isoproppyl Ester
AZT45

(Z)-2-[[[(2-AMINO-4-THIAZOLYL)[[(2S,3S)-2-METHYL-4-OXO-1-SULFO-3-AZETIDINYL] CARBAMOYL]METHYLENE]AMINO]OXY]-2-METHYLPROPIONIC ACID METHYL ESTER
CAS:1255912-98-1
Aztreonam Methyl Ester
AZT46

(Z)-2-[[[(2-Amino-4-thiazolyl)[[(2S,3S)-2-methyl-4-oxo-1-sulfo-3-azetidinyl] carbamoyl]methylene]amino]oxy]-2-methylpropionic acid t-butyl ester
Aztreonam t-Butyl Ester
AZT47

(Z)-2-[[[(2-Amino-4-thiazolyl)[[(2S,3S)-2-methyl-4-oxo-1-sulfo-3-azetidinyl] carbamoyl]methylene]amino]oxy]-2-methylpropionic acid trihydrate
Aztreonam (Trihydrate) Aztreonam Trihydrate
AZT00T

(Z)-2-[[[(2-Amino-4-thiazolyl)[[(2S,3S)-2-methyl-4-oxo-3-azetidinyl] carbamoyl]methylene]amino]oxy]-2-methylpropionic acid t-butyl ester
Aztreonam Desulfo t-Butyl Ester
AZT57

(Z)-2-[4-(1,2-Diphenyl-1-butenyl)phenoxy]-N,N-dimethylethanamine
CAS:10540-29-1
Tamoxifen (Base)
TMX00B

(Z)-2-[4-(1,2-Diphenyl-1-butenyl)phenoxy]-N,N-dimethylethanamine N-Oxide
CAS:75504-34-6
Tamoxifen N-oxide
TMX50

(Z)-2-{11-[3-(Dimethylamino)propylidene]-6,11-dihydrodibenz[b,e]oxepin-2-yl}-2-hydroxyacetic acid
CAS:1331822-32-2
Olopatadine USP RC A (Base) alpha-Hydroxy Olopata
OLP21B

(Z)-2-{11-[3-(Dimethylamino)propylidene]-6,11-dihydrodibenz[b,e]oxepin-2-yl}-2-hydroxyacetic acid formate salt
Olopatadine USP RC A (Formate) alpha-Hydroxy Olop
OLP21F

(Z)-2-{11-[3-(Dimethylamino)propylidene]-6,11-dihydrodibenz[b,e]oxepin-2-yl}-2-hydroxyacetic acid hydrochloride
CAS:1331668-21-3
Olopatadine USP RC A (HCl) alpha-Hydroxy Olopatad
OLP21H

(Z)-2-CHLORO-3-(DIMETHYLAMINO)ACRYLALDEHYDE
CAS:73312-69-3
Etoricoxib Impurity 1
ECX61

(Z)-2-Cyano-N,N-diethyl-3-(4-hydroxy-3-methoxy-5-nitrophenyl)acrylamide
CAS:158693-04-0
Entacapone Methoxy (Z)-Isomer
ETC54

(Z)-2-Isopropyl-5-styrylbenzene-1,3-diol
CAS:1622988-14-0
Benvitimod (Z)-Isomer cis-Benvitimod
BVT50

(Z)-3,9-Dimethyl-2,3-dihydrobenzo[f][1,4]oxazepine
CAS:284486-96-0
Mexiletine RC 1
MLT61

(Z)-3-((3,5-DIMETHYL-4-(PYRROLIDINE-1-CARBONYL)-1H-PYRROL-2-YL)METHYLENE)-5-FLUOROINDOLIN-2-ONE
CAS:2135339-43-2
Sunitinib Impurity 4
SNT64

(Z)-3-((4-(6,7-Dimethoxyquinolin-4-yloxy)phenyl)carbamoyl)-4-(4-fluorophenylamino)-4-oxobutyl N-4-(6,7-dimethoxyquinolin-4-yloxy)phenyl-1-((4-fluorophenyl)carbamoyl)cyclopropanecarbimidate
Cabozantinib Impurity 7
CZN57

(Z)-3-(2-CHLORO-9H-THIOXANTHEN-9-YLIDENE)-N,N-DIMETHYLPROPAN-1-AMINE
CAS:113-59-7
Chlorprothixene (Base)
CPN00B

(Z)-3-(2-Chloro-9H-thioxanthen-9-ylidene)-N,N-dimethylpropan-1-amine hydrochloride
CAS:6469-93-8
Chlorprothixene HCl
CPN00H

(Z)-3-(2-Chloro-9H-thioxanthen-9-ylidene)-N-methylpropan-1-amine HCl
CAS:51382-91-3
Chlorprothixene EP Impurity C (Base) Norchlorprot
CPN03B

(Z)-3-(2-Chloro-9H-thioxanthen-9-ylidene)-N-methylpropan-1-amine HCl
Chlorprothixene EP Impurity C (HCl) Norchlorproth
CPN03H

(Z)-3-(2-Methoxyethyl) 5-(3-phenylallyl) 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate
CAS:146924-45-0
Cilnidipine (Z)-Isomer
CND50

(Z)-3-(3-(3,5-BIS(TRIFLUOROMETHYL)PHENYL)-1H-1,2,4-TRIAZOL-1-YL)-N'-(PYRAZIN-2-YL)ACRYLOHYDRAZIDE
CAS:1393477-72-9
Selinexor
SXR00

(Z)-3-(3-(3,5-BIS(TRIFLUOROMETHYL)PHENYL)-1H-1,2,4-TRIAZOL-1-YL)ACRYLIC ACID
CAS:1388842-44-1
Selinexor RC 1
SXR51

(Z)-3-(3-Methylpyridin-2-ylamino)-2-(1H-tetrazol-5-yl)acrylic acid
Pemirolast RC 3
PML63

(Z)-3-(4-((1H-IMIDAZOL-1-YL)METHYL)PHENYL)ACRYLIC ACID
CAS:143945-86-2
Ozagrel (Z)-Isomer
OZG50A

(Z)-3-(4-Chloro-9H-thioxanthen-9-ylidene)-N,N-dimethylpropan-1-amine
CAS:1082649-26-0
Chlorprothixene EP Impurity D (Base) Chlorprothix
CPN04B

(Z)-3-(4-Chloro-9H-thioxanthen-9-ylidene)-N,N-dimethylpropan-1-amine oxalate
Chlorprothixene EP Impurity D (Oxalate) Chlorprot
CPN04X

(Z)-3-(Dibenzo[b,e]oxepin-11(6H)-ylidene)-N,N-dimethylpropan-1-amine
CAS:3607-18-9
Doxepin EP Impurity D (Base) (Z)-Doxepin cis-Dox
DXP04B

(Z)-3-(Dibenzo[b,e]oxepin-11(6H)-ylidene)-N,N-dimethylpropan-1-amine HCl
CAS:25127-31-5
Doxepin EP Impurity D (HCl) (Z)-Doxepin HCl cis-
DXP04H

(Z)-3-(Dibenzo[b,e]thiepin-11(6H)-ylidene)-N,N-dimethylpropan-1-amine
CAS:25627-38-7
Dosulepin EP Impurity E (Z)-Dosulepin
DSL05

(Z)-3-{2-(Carboxymethyl)dibenzo[b,e]oxepin-11(6H)-ylidene}-N,N-dimethyl propan-1-amine oxide
CAS:173174-07-7 (Z) 203188-31-2 (Z/E)
Olopatadine USP RC B Olopatadine N-Oxide
OLP22

(Z)-3-Methyl-4-(3-methyl-5-oxo-1-phenyl-1H-pyrazol-4(5H)-ylidene)-1-phenyl-1H-pyrazol-5(4H)-one N-Oxide
Edaravone Impurity 7
ERV57

(Z)-3�-(2-(1-(3,4-Dimethylphenyl)-3-methyl-5-oxo-1H-pyrazol-4(5H)-ylidene)-1-hydroxyhydrazinyl)-2�-hydroxy-[1,1�-biphenyl]-3-carboxylic Acid
CAS:2734533-17-4
Eltrombopag N-Hydroxy Impurity
EBP54

(Z)-4-({2-BUTYL-5-[2-CARBOXY-3-(THIOPHEN-2-YL)PROP-1-ENYL]-1H-IMIDAZOL-1-YL}METHYL)BENZOIC ACID
CAS:148674-39-9
Eprosartan USP RC F (Z)-Eprosartan
EPS26

(Z)-4-(1-(4-(2-(Methylamino)ethoxy)phenyl)-1-phenylbut-1-en-2-yl)phenol
CAS:170171-12-7
Tamoxifen N-Desmethyl p-Hydroxy
TMX58B

(Z)-4-(2-(Dipropylamino)ethyl)-3-(hydroxyimino)indolin-2-one
CAS:2734474-99-6
Ropinirole EP Impurity H 3-Hydroxyimino Ropinirol
RPN08

(Z)-4-(4-(2-Hydroxyethoxy)phenyl)-3,4-diphenylbut-3-en-1-ol
Ospemifene Hydroxy Impurity
OPF56

(Z)-4-(4-(Piperidin-1-ylmethyl)pyridin-2-yloxy)but-2-en-1-amine
CAS:103922-84-5
Lafutidine RC 8
LFT68

(Z)-4-(4-Chloro-1-(4-(2-hydroxyethoxy)phenyl)-1-phenylbut-1-en-2-yl)phenol
CAS:341525-22-2
Ospemifene 4'-Hydroxy Impurity
OPF50

(Z)-4-(Hydroxyimino)-1-Phenyl-1,2-Dihydroisoquinolin-3(4H)-One
CAS:90861-76-0
Solifenacin Impurity 12
SLF72

(Z)-4-[3-[2-(Trifluoromethyl)-9H-thioxanthen-9-ylidene]propyl]-1-piperazineethanol
CAS:53772-82-0
Flupentixol cis-Isomer (Base) (Z)-Flupentixol
FPX50B

(Z)-4-[3-[2-(TRIFLUOROMETHYL)-9H-THIOXANTHEN-9-YLIDENE]PROPYL]-1-PIPERAZINEETHANOL DIHYDROCHLORIDE
CAS:51529-01-2
Flupentixol cis-Isomer (2HCl) (Z)-Flupentixol Dih
FPX50H

(Z)-4-[3-[2-(Trifluoromethyl)-9H-thioxanthen-9-ylidene]propyl]-1-piperazineethanol oxalate
Flupentixol cis-Isomer (Oxalate) (Z)-Flupentixol
FPX50X

(Z)-4-Aminobut-2-en-1-ol
CAS:41372-34-3
Lafutidine RC 6
LFT66B

(Z)-4-Chlorobut-2-en-1-amine
CAS:774474-50-9
Lafutidine RC 7 (Base)
LFT67B

(Z)-4-CHLOROBUT-2-EN-1-AMINE HYDROCHLORIDE
CAS:7153-66-4
Lafutidine RC 7 (HCl)
LFT67H

(Z)-4-Hydroxy-N'-[(5-nitrofuran-2-yl)methylidene]-benzohydrazide
Nifuroxazide EP Impurity E Nifuroxazide cis-Isome
NRX05

(Z)-5,5�-(Diazene-1,2-diyl)bis(benzo[c][1,2]oxaborol-1(3H)-ol)
Tavaborole Impurity 6
TVB66

(Z)-5-((5-FLUORO-2-OXOINDOLIN-3-YLIDENE)METHYL)-2,4-DIMETHYL-1H-PYRROLE-3-CARBOXAMIDE
CAS:1186651-51-3
Sunitinib Amide Impurity
SNT44

(Z)-5-((5-FLUORO-2-OXOINDOLIN-3-YLIDENE)METHYL)-2,4-DIMETHYL-1H-PYRROLE-3-CARBOXYLIC ACID
CAS:356068-93-4
Sunitinib Impurity 5
SNT65

(Z)-5-((5-FLUORO-2-OXOINDOLIN-3-YLIDENE)METHYL)-N-(2-HYDROXYETHYL)-2,4-DIMETHYL-1H-PYRROLE-3-CARBOXAMIDE
CAS:2170562-55-5
Sunitinib Impurity 3
SNT63

(Z)-5-(4-(2-((6-(4-Methoxyphenoxy)pyrimidin-4-yl)(methyl)amino)ethoxy)benzylidene)thiazolidine-2,4-dione
CAS:607722-95-2
Lobeglitazone RC 3 (Base)
LBG53B

(Z)-5-(4-Hydroxystyryl)benzene-1,3-diol
CAS:61434-67-1
Resveratrol Cis-Isomer
RVT61

(Z)-5-(5-(1,2-Dichlorovinyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one
CAS:1446089-84-4
Sildenafil RC 14
SDFA4

(Z)-5-{4-[2-(5-Ethyl-2-pyridinyl) ethoxy] benzylidene}-2,4-thiazolidinedione
CAS:136401-69-9 627502-58-3
Pioglitazone EP Impurity B Pioglitazone USP RC B
PGT02

(Z)-6,6-Dimethyl-N-(naphthalen-1-ylmethyl)hept-2-en-4-yn-1-amine
CAS:114311-72-7
Terbinafine Impurity 10 N-Desmethyl cis-Terbinafi
TBN70

(Z)-6-((2E,4E,6E)-3,7-Dimethylnona-2,4,6,8-tetraenylidene)-1,5,5-trimethylcyclohex-1-ene
CAS:1224-78-8
Vitamin A EP Impurity B Anhydro Vitamin A all-tr
VTA02

(Z)-6-(3-(4-Hydroxystyryl)-5-hydroxyphenoxy)-3,4,5-trihydroxy-tetrahydro-2H-pyran-2-carboxylic acid
CAS:387372-23-8
Resveratrol 3-O-B-D-Glucuronide cis-Isomer
RVT55

(Z)-7-[(2-Aminoethyl)sulfanyl]-2-[[[(1S)-2,2-dimethylcyclopropyl]carbonyl]amino]hept-2-enoic acid
Cilastatin EP Impurity H Decarboxy Cilastatin
CSS08

(Z)-7-[(RS)-[(R)-2-Amino-2-carboxyethyl]sul?nyl]-2-[[[(1S)-2,2-dimethylcyclopropyl] carbonyl]amino]hept-2-enoic acid
Cilastatin EP Impurity A Cilastatin Acid Sulfoxid
CSS01

(Z)-7-[[(2R)-2-Amino-2-carboxyethyl]sulfanyl]-2-[(2,3-dimethylbut-3-enoyl)amino]hept-2-enoic acid
Cilastatin EP Impurity F
CSS06

(Z)-7-[[(R)-2-[(1,1-Dimethyl-3-oxobutyl)amino]-2-carboxyethyl]sulfanyl]-2-[[[(1S)-2,2-dimethylcyclopropyl]carbonyl]amino]hept-2-enoic acid
CAS:2245159-80-0
Cilastatin EP Impurity C
CSS03

(Z)-7-[[(R)-2-[[(1RS)-1-Methyl-3-oxobutyl]amino]-2-carboxyethyl]sulfanyl]-2-[[[(1S)-2,2-dimethylcyclopropyl]carbonyl]amino]hept-2-enoic acid
Cilastatin EP Impurity B
CSS02

(Z)-7-[[(R)-2-Amino-2-carboxyethyl]sulfanyl]-2-[[[(1S)-2,2-dimethyl cyclopropyl]carbonyl]amino]hept-2-enoic acid
CAS:82009-34-5
Cilastatin Acid
CSS00A

(Z)-7-[4-(Trifluoromethyl)phenyl]-5,12-dioxa-2,6-diazatridec-6-enoic acid 9H-fluoren-9-ylmethyl ester
Fluvoxamine N-Fmoc (Z)-Isomer
FVX55

(Z)-Benzyl 4-((2-hydroxy-4-methoxyphenyl)(hydroxyimino)methyl)piperidine-1-carboxylate
CAS:84163-00-8
Risperidone RC 22
RSP92

(Z)-ETHYL 2-AMINO-2-(HYDROXYIMINO)ACETATE
CAS:144167-29-3
Metronidazole RC 3
MND63

(Z)-Ethyl 3-((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenylamino)(phenyl)methylene)-2-oxoindoline-6-carboxylate
CAS:1139455-52-9
Nintedanib Impurity D Nintedanib Ethyl Ester
NTD54

(Z)-Ethyl 3-(2-((4-(N'-((heptan-2-yloxy)carbonyl)carbamimidoyl)phenylamino)methyl)-1-methyl-N-(pyridin-2-yl)-1H-benzo[d]imidazole-5-carboxamido)propanoate
CAS:1610758-21-8
Dabigatran EP Impurity F
DBG06B

(Z)-Ethyl 3-(dimethylamino)-2-(2,3,4,5-tetrafluorobenzoyl)acrylate
CAS:138998-47-7
Levofloxacin Impurity 1
LFX61

(Z)-Ethyl 3-amino-N-cyano-3-oxopropanimidate
Minoxidil RC 2
MNX62

(Z)-isopropyl 3-(3-(3,5-bis(trifluoromethyl)phenyl)-1H-1,2,4-triazol-1-yl)acrylate
CAS:1333152-22-9
Selinexor RC 2
SXR52

(Z)-Isopropyl 7-((1R,2R,3R,5S)-3,5-dihydroxy-2-((R,E)-3-hydroxy-5-phenylpent-1-enyl)cyclopentyl)hept-5-enoate
CAS:130273-87-9
Bimatoprost Acid 15-Epi Isopropyl Ester
BPS54

(Z)-ISOPROPYL 7-((1R,2R,3R,5S)-3,5-DIHYDROXY-2-((S,E)-3-HYDROXY-5-PHENYLPENT-1-ENYL)CYCLOPENTYL)HEPT-5-ENOATE
CAS:130209-76-6
Bimatoprost Acid Isopropyl Ester
BPS53

(Z)-Methyl 1-acetyl-3-((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenylamino)(phenyl) methylene)-2-oxoindoline-6-carboxylate
CAS:2130844-77-6
Nintedanib RC 9 Nintedanib N1-Acetyl Impurity
NTD69

(Z)-Methyl 2-(2-(6-(2-cyanophenoxy)pyrimidin-4-yloxy)phenyl)-3-methoxyacrylate
CAS:143130-94-3
Azoxystrobin (Z)-Isomer
AZX50

(Z)-Methyl 2-(3-(4-(methylsulfonyl)benzylidene)-6-fluoro-2-methyl-3H-inden-1-yl)acetate
CAS:141741-24-4
Sulindac Sulfone Methyl Ester
SDC61

(Z)-Methyl 2-(3-(4-(methylthio)benzylidene)-6-fluoro-2-methyl-3H-inden-1-yl)acetate
CAS:106647-49-8
Sulindac Sulfide Methyl Ester
SDC51

(Z)-METHYL 2-(3-NITROBENZYLIDENE)-3-OXOBUTANOATE
CAS:119128-13-1
Manidipine Benzylidene Impurity
MDP53

(Z)-Methyl 3-((4-(2-(4-(2-((4-((Z)-(6-(methoxycarbonyl)-2-oxoindolin-3-ylidene)(phenyl)methylamino) phenyl)(methyl)amino)-2-oxoethyl)piperazin-1-yl)-N-methylacetamido)phenylamino)(phenyl)methylene)-2-oxoindoline-6-carboxylate
CAS:2410284-90-9
Nintedanib Impurity E Nintedanib Dimer
NTD55

(Z)-Methyl 3-((4-(2-(4-ethylpiperazin-1-yl)-N-methylacetamido)phenylamino)(phenyl)methylene)-2-oxoindoline-6-carboxylate
Nintedanib Impurity B Nintedanib N-Ethyl Analog
NTD52

(Z)-Methyl 3-((4-(2-(4-methylpiperazin-1-yl)acetamido)phenylamino)(phenyl)methylene)-2-oxoindoline-5-carboxylate
Nintedanib RC 4 N-Desmethyl Nintedanib 5-Methoxyc
NTD64

(Z)-Methyl 3-((4-(2-(4-methylpiperazin-1-yl)acetamido)phenylamino)(phenyl)methylene)-2-oxoindoline-6-carboxylate
CAS:894783-61-0
Nintedanib RC 3 N-Desmethyl Nintedanib
NTD63

(Z)-Methyl 3-((4-(2-(4-methylpiperazin-1-yl)acetamido)phenylamino)(phenyl)methylene)-2-oxoindoline-7-carboxylate
Nintedanib RC 5
NTD65

(Z)-Methyl 3-((4-(methylamino)phenylamino)(phenyl)methylene)-2-oxoindoline-6-carboxylate
CAS:1987887-92-2
Nintedanib RC 6
NTD66

(Z)-Methyl 3-((4-(N-methylacetamido)phenylamino)(phenyl)methylene)-2-oxoindoline-6-carboxylate
CAS:1139458-48-2
Nintedanib RC 1 Nintedanib N-Acetyl Analog
NTD61

(Z)-Methyl 3-((4-hydroxyphenylamino)(phenyl)methylene)-2-oxoindoline-6-carboxylate
CAS:2519501-85-8
Nintedanib Impurity C Nintedanib 4-Hydroxyphenyl
NTD53

(Z)-Methyl 3-((methyl(4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl) methylene)-2-oxoindoline-6-carboxylate
Nintedanib RC 8 N-Methyl Nintedanib
NTD68

(Z)-METHYL 3-AMINOBUT-2-ENOATE
CAS:14205-39-1
Amlodipine Impurity 8 Nifedipine EP Impurity D
AML68

(Z)-Methyl 7-((1R,2R,3R,5S)-3,5-dihydroxy-2-((R,E)-3-hydroxy-5-phenylpent-1-enyl)cyclopentyl)hept-5-enoate
CAS:122675-28-9
Bimatoprost Acid 15-Epi Methyl Ester
BPS52

(Z)-N'-(Amino(pyridin-4-yl)methylene)isonicotinohydrazide
CAS:445218-61-1
Topiroxostat Impurity 7
TPX57

(Z)-N-((2R,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)-N'-(2-oxoethyl)formamidine
CAS:38934-69-9
Ribavirin RC 5
RBV65

(Z)-N-(2-((5-((Dimethylamino)methyl)furan-2-yl)methylthio)ethyl)-1-(methylthio)-2-nitroethenamine
CAS:72115-14-1
Ranitidine RC 4
RNT64

(Z)-N-(2-((5-((dimethylamino)methyl)furan-2-yl)methylthio)ethyl)-N-methyl-2-nitroethene-1,1-diamine
CAS:667463-27-6
Ranitidine RC 6 cis-Ranitidine
RNT66

(Z)-N-(2-(Diethylamino)ethyl)-5-((5-fluoro-2-oxoindolin-3-ylidene)methyl)-N,2,4-trimethyl-1H-pyrrole-3-carboxamide
CAS:2411816-48-1
Sunitnib N-Methyl Impurity
SNT51

(Z)-N-(4-(4-(Piperidin-1-ylmethyl)pyridin-2-yloxy)but-2-enyl)acetamide
CAS:154923-16-7
Lafutidine RC 5
LFT65B

(Z)-N-(4-(N-Methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)-3-((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenylamino)(phenyl)methylene)-2-oxoindoline-6-carboxamide
Nintedanib RC 2
NTD62

(Z)-N-(4-Chlorobut-2-enyl)-2-(furan-2-ylmethylsulfinyl)acetamide
CAS:169899-17-6
Lafutidine RC 3
LFT63

(Z)-N-(4-Trifluoromethylphenyl)-2-cyano-3-hydroxycrotonamide
CAS:163451-81-8
Leflunomide EP Impurity B Leflunomide USP RC B T
LFM02

(Z)-N-(4-Trifluoromethylphenyl)-2-cyano-3-hydroxycrotonamide
CAS:163451-81-8
Teriflunomide Leflunomide EP Impurity B Leflunom
TFM00

(Z)-N-Methyl-2-(3-(2-(pyridin-2-yl)vinyl)-1H-indazol-6-ylthio)benzamide
CAS:885126-40-9
Axitinib RC 1
AXT61

(Z)-N-Methyl-N-(3-phenyl-2-propen-1-yl)-1-naphthalenemethanamine
CAS:65473-08-7
Naftifine (Z)-Isomer
NTF50

(Z)-N1-Methyl-N2-(4-(4-(piperidin-1-ylmethyl)pyridin-2-yloxy)but-2-enyl)phthalamide
CAS:1339863-11-4
Lafutidine RC 4
LFT64B

(Z)-tert-Butyl 3-(2-formylphenyl)acrylate
Lacidipine RC 4
LCD64

(Z/E)-4-[3-[2-(Trifluoromethyl)-9H-thioxanthen-9-ylidene]propyl]-1-piperazineethanol dihydrochloride
CAS:2413-38-9
Flupentixol Dihydrochloride (E/Z)-Flupentixol 2HC
FPX00H

(Z/E)-7-[4-(Trifluoromethyl)phenyl]-5,12-dioxa-2,6-diazatridec-6-enoic acid 9H-fluoren-9-ylmethyl ester
CAS:1246833-32-8
Fluvoxamine N-Fmoc Racemate
FVX56

(Z/E)-N-(4-Trifluoromethylphenyl)-2-cyano-3-hydroxycrotonamide
CAS:108605-62-5
Teriflunomide (Z/E)-Mixture
TFM60

?9-Fluoro-11�,17-dihydroxy-16a-methyl-3,20-dioxopregna-1,4-dien-21-yl disodium phosphate
CAS:2392-39-4
Dexamethasone sodium phosphate
DSP00N

[(1,2-Dihydro-5,6,17,19,21-pentahydroxy-23- methoxy-2,4,12,16,18,20,22-heptamethyl-1,11-dioxo-2,7-(epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-9-yl)oxy]acetic acid 21-acetate
CAS:13929-35-6
Rifaximin EP Impurity B Rifamycin B Rifamycin EP
RFX02

[(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)(methyl)amino] methanesulfonic acid magnesium complex
CAS:63372-86-1
Metamizole Magnesium Dipyrone Magnesium Methapyr
MMZ00M

[(1aS,8R,8aR,8bS)-8a-Hydroxy-6-methoxy-1,5-dimethyl-4,7-dioxo-1,1a,2,4,7,8,8a,8b-octahydroazirino[2',3'3,4]pyrrolo[1,2-a]indol-8-yl] methyl carbamate
CAS:4055-40-7
Mitomycin EP Impurity C Mitomycin B
MTM03

[(1aS,8S,8aR,8bS)-6,8a-Dimethoxy-5-methyl-4,7-dioxo-1,1a,2,4,7,8,8a,8b-octahydroazirino[2',3'3,4]pyrrolo[1,2-a]-indol-8-yl]methyl carbamate
CAS:4055-39-4
Mitomycin EP Impurity B Mitomycin A Mitomycin 6-
MTM02

[(1aS,8S,8aR,8bS)-6-Amino-8a-methoxy-5-methyl-4,7-dioxo-1,1a,2,4,7,8,8a,8b-octahydroazirino[2',3'3,4]pyrrolo[1,2-a]-indol-8-yl] methyl carbamate
CAS:50-07-7
Mitomycin Mitomycin C
MTM00

[(1R)-3-Methyl-1-({(2R)-3-phenyl-2-[(pyrazin-2-ylcarbonyl)amino]propanoyl} amino)butyl]boronic acid
CAS:1132709-15-9
Bortezomib USP RC A Bortezomib (1R, 2R)-Isomer B
BTZ21

[(1R)-3-Methyl-1-({(2S)-3-phenyl-2-[(pyrazin-2-ylcarbonyl)amino]propanoyl} amino)butyl]boronic acid
CAS:179324-69-7
Bortezomib (1R, 2S)-Bortezomib
BTZ00

[(1R,2R)-3-[[(4-Aminophenyl)sulfonyl](2-methylpropyl)amino]-2-hydroxy-1-(phenyl-methyl)propyl]carabamic acid (3R,3aS,6aR)-hexahydrofuro[2,3-b]-furan-3-yl ester
CAS:1546918-95-9
Darunavir (1R,2R)-Isomer Darunavir 1-Epi Isomer
DRV51

[(1R,3S)-3-[2-Amino-6-(cyclopropylamino)-9H-purin-9-yl]cyclopentyl] methanol
CAS:208762-35-0
Abacavir EP Impurity E Dihydro Abacavir
ABC05

[(1R,4R)-4-[2-Amino-6-(cyclopropylamino)-9H-purin-9-yl]cyclopent-2-enyl]methanol
CAS:783292-37-5
Abacavir EP Impurity D (Base) trans-Abacavir
ABC04B

[(1R,4R)-4-[2-Amino-6-(cyclopropylamino)-9H-purin-9-yl]cyclopent-2-enyl]methanol dihydrochloride
CAS:267668-71-3
Abacavir EP Impurity D (2HCl) trans-Abacavir Dihy
ABC04H

[(1R,4S)-4-[2-Amino-6-(cyclopropylamino)-9H-purin-9-yl]cyclopent-2-enyl]methanol
CAS:136470-79-6
Abacavir EP Impurity A (1R,4S)-Abacavir ent-Abac
ABC01

[(1R,4S)-7,7-Dimethyl-2-oxobicyclo[2.2.1]hept-1-yl]methanesulfonic acid (-)-10-Camphorsulfonic acid (R)-Camphor-10-sulfonic Acid L-(-) -Camphor-10-sulfonic Acid L-10-Camphorsulfonic Acid
CAS:35963-20-3
Voriconazole EP Impurity E (1R)-Isomer
VRC55

[(1RS,4SR)-7,7-Dimethyl-2-oxobicyclo[2.2.1]hept-1-yl]methanesulfonic acid
CAS:5872-08-2
Voriconazole EP Impurity E Voriconazole USP RC F
VRC05

[(1S)-3-Methyl-1-({(2R)-3-phenyl-2-[(pyrazin-2-ylcarbonyl)amino]propanoyl} amino)butyl]boronic acid
CAS:1132709-16-0
Bortezomib (1S, 2R)-Isomer Bortezomib Enantiomer
BTZ43

[(1S)-3-Methyl-1-({(2S)-3-phenyl-2-[(pyrazin-2-ylcarbonyl)amino]propanoyl}amino)butyl]boronic acid
CAS:1132709-14-8
Bortezomib USP Impurity G Bortezomib (S,S)-Diaste
BTZ57

[(1S,2R)-3-[[(4-Aminophenyl)sulfonyl](2-methylpropyl)amino]-2-hydroxy-1-(phenyl-methyl)propyl]carabamic acid
Darunavir Carbamic Acid Impurity
DRV60

[(1S,2R)-3-[[(4-Aminophenyl)sulfonyl](2-methylpropyl)amino]-2-hydroxy-1-(phenyl-methyl)propyl]carabamic acid (3R,3aS,6aR)-hexahydrofuro[2,3-b]-furan-3-yl ester
CAS:206361-99-1
Darunavir (Base) Darunavir (1S,2R)-Isomer
DRV00B

[(1S,2R)-3-[[(4-Aminophenyl)sulfonyl](2-methylpropyl)amino]-2-hydroxy-1-(phenyl-methyl)propyl]carabamic acid (3R,3aS,6aR)-hexahydrofuro[2,3-b]-furan-3-yl ester ethanolate
CAS:635728-49-3
Darunavir Ethanolate Darunavir Ethanolate (1S,2R)
DRV00E

[(1S,2R)-3-[[(4-AMINOPHENYL)SULFONYL](2-METHYLPROPYL)AMINO]-2-HYDROXY-1-(PHENYL-METHYL)PROPYL]CARABAMIC ACID METHYL ESTER
CAS:1526916-57-3
Darunavir Carbamic Acid Methyl Ester
DRV61

[(1S,2S)-3-[[(4-Aminophenyl)sulfonyl](2-methylpropyl)amino]-2-hydroxy-1-(phenylmethyl)propyl]carbamic acid (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl ester
CAS:850141-19-4
Darunavir (1S,2S)-Isomer Darunavir 2-Epi Isomer
DRV53

[(1S,2S,4S,5R,6S,6aR,10aS,11S)-8-Amino-5-methoxy-9-methyl-7,10-dioxo-2,3,6,6a,7,10-hexahydro-1,2,5-metheno-1H,5H-imidazo[2,1-i]indol-6-yl] methyl carbamate
CAS:111750-67-5
Mitomycin EP Impurity D Albomitomycin C
MTM04

[(1S,4R)-4-(2,6-DIAMINO-9H-PURIN-9-YL)CYCLOPENT-2-ENYL]METHANOL
CAS:124752-25-6
Abacavir EP Impurity C Abacavir USP RC A Descycl
ABC03

[(1S,4R)-4-(2-AMINO-6-CHLORO-9H-PURIN-9-YL)CYCLOPENT-2-ENYL]METHANOL HYDROCHLORIDE
CAS:172015-79-1
Abacavir USP RC C (HCl) Abacavir 6-Chloro Analog
ABC23H

[(1S,4R)-4-[2-Amino-6-(cyclopropylamino)-9H-purin-9-yl]-2-cyclopenten-1-yl]methyl-�-D-glucopyranosiduronic acid sodium salt
CAS:384329-76-4
Abacavir Glucuronide (Acid)
ABC60A

[(1S,4R)-4-[2-Amino-6-(cyclopropylamino)-9H-purin-9-yl]-2-cyclopenten-1-yl]methyl-�-D-glucopyranosiduronic acid sodium salt
Abacavir Glucuronide (Sodium)
ABC60N

[(2,6-DICHLOROPHENYL)ACETYL]GUANIDINE HYDROCHLORIDE
CAS:29110-48-3
Guanfacine HCl
GFC00H

[(2-Amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy]acetic acid
CAS:80685-22-9
Aciclovir Impurity 6
ACV66

[(2R)-1-[4-(2-Methoxyethyl)phenoxy]-3-[(1-methylethyl)-amino]propan-2-ol
CAS:81024-43-3
Metoprolol R-Isomer (R)-(+)-Metoprolol
MTP30

[(2R,3R,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-4-fluoro-3-hydroxy-4-methyl-tetrahydrofuran-2-yl]methanol
CAS:863329-66-2
Sofosbuvir IP Impurity D Sofosbuvir Desphosphate
SFS07

[(2R,3R,4R,5S)-5-(2,4-dioxopyrimidin-1-yl)-4-fluoro-3-hydroxy-4-methyl-tetrahydrofuran-2-yl]methanol
Sofosbuvir Desphosphate alpha-Isomer
SFS42

[(2R,3S)-3-Methyloxiranyl]phosphonic acid
CAS:23155-02-4
Fosfomycin (Acid)
FFM00A

[(2R,3S)-3-METHYLOXIRANYL]PHOSPHONIC ACID CALCIUM SALT
CAS:26016-98-8
Fosfomycin (Calcium)
FFM00C

[(2R,3S)-3-Methyloxiranyl]phosphonic acid compound with 2-amino-2-(hydroxymethyl)-1,3-propanediol
CAS:78964-85-9
Fosfomycin (Trometamol) Fosfomycin Tromethamine
FFM00T

[(2R,3S)-3-Methyloxiranyl]phosphonic acid disodium salt
CAS:26016-99-9
Fosfomycin disodium
FFM00N

[(2R,3S)-3-Methyloxiranyl]phosphonic acid disodium salt
CAS:26016-99-9
Fosfomycin (Disodium)
FFM00N

[(2R,3S,4R,5R)-3,4-Dihydroxy-5-[4-(hydroxyamino)-2-oxoprimidin-1(2H)-yl]tetrahydrofuran-2-yl]methyl butyrate
Molnupiravir IP Impurity I Molnupiravir Butyrate
MNP59

[(2R,3S,4S)-5-(7,8-Dimethyl-2,4-dioxobenzo[g]pteridin-10-yl)-3,4-dihydroxy-1-phosphonooxypentan-2-yl] dihydrogen phosphate
CAS:86108-25-0
Riboflavin Sodium Phosphate EP Impurity C Ribofla
RBF43A

[(2R,4R)-4-[4-(3-Methyl-1-phenyl-1H-pyrazol-5-yl)-1-piperazinyl]-2-pyrrolidinyl]-3-thiazolidinylmethanone
CAS:1404559-17-6
Teneligliptin (2R,4R)-Isomer Teneligliptin Enanti
TGT51

[(2R,4S)-4-[4-(3-Methyl-1-phenyl-1H-pyrazol-5-yl)-1-piperazinyl]-2-pyrrolidinyl]-3-thiazolidinylmethanone
Teneligliptin (2R,4S)-Isomer
TGT52

[(2RS)-1-[4-(2-Methoxyethyl)phenoxy]-3-[(1-methylethyl)-amino]propan-2-ol
CAS:51384-51-1 37350-58-6
Metoprolol
MTP00B

[(2RS)-1-ETHYLPYRROLIDIN-2-YL]METHANAMINE
CAS:26116-12-1
Sulpiride EP Impurity A Amisulpride EP Impurity A
SPD01

[(2RS)-1-Ethylpyrrolidin-2-yl]methanamine 2-(Aminomethyl)-1-ethylpyrrolidine
CAS:26116-12-1
Amisulpride EP Impurity A Sulpiride EP Impurity A
ASD01

[(2RS)-Oxiran-2-yl]methanol
CAS:556-52-5
Levodropropizine EP Impurity C Glycidol
LDZ03

[(2RS,4SR)-2-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-yl-methyl)-1,3-dioxolan- 4-yl]methyl 4-methylbenzenesulfonate
CAS:134071-44-6
Ketoconazole EP Impurity E
KCZ05

[(2S)-1-[4-(2-Methoxyethyl)phenoxy]-3-[(1-methylethyl)-amino]propan-2-ol
CAS:81024-42-2
Metoprolol S-Isomer (S)-(-)-Metoprolol
MTP31

[(2S,3E,5E,7E,9S,11R,13R,14R,15E,17R,20S,21R)-14,20-Dihydroxy-22-[(1S,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-2,13-dimethoxy-3,9,11,15,17,21-hexamethyl-12,18-dioxo-3,5,7,15-docosatetraen-1-yl]tetrahydro-2-hydroxy-3-methyl-2H-pyran-2-yl]-2-oxoacetyl]-2-piper
CAS:185107-79-3
Rapamycin Open-Ring Acid 34-Hydroxy Sirolimus Se
RPM34

[(2S,3S,4R)-1-(7,8-Dimethyl-2,4-dioxobenzo[g]pteridin-10-yl)-2,4-dihydroxy-5-phosphonooxypentan-3-yl] dihydrogen phosphate
CAS:86108-26-1
Riboflavin Sodium Phosphate EP Impurity B Ribofla
RBF42A

[(2S,3S,4R)-1-(7,8-Dimethyl-2,4-dioxobenzo[g]pteridin-10-yl)-2,4-dihydroxy-5-phosphonooxypentan-3-yl] dihydrogen phosphate ammonium salt
Riboflavin Sodium Phosphate EP Impurity B (Ammoniu
RBF42N

[(2S,3S,4R)-1-(7,8-Dimethyl-2,4-dioxobenzo[g]pteridin-10-yl)-2,5-dihydroxy-4-phosphonooxypentan-3-yl] dihydrogen phosphate
CAS:86108-27-2
Riboflavin Sodium Phosphate EP Impurity A Ribofla
RBF41A

[(2S,4R)-4-[4-(3-Methyl-1-phenyl-1H-pyrazol-5-yl)-1-piperazinyl]-2-pyrrolidinyl]-3-thiazolidinylmethanone
CAS:1404559-15-4
Teneligliptin (2S,4R)-Isomer
TGT53

[(2S,4S)-4-[4-(3-Methyl-1-phenyl-1H-pyrazol-5-yl)-1-piperazinyl]-2-pyrrolidinyl]-3-thiazolidinylmethanone
CAS:760937-92-6
Teneligliptin (2S,4S)-Teneligliptin
TGT00B

[(2S,4S)-4-[4-(3-Methyl-1-phenyl-1H-pyrazol-5-yl)-1-piperazinyl]-2-pyrrolidinyl]-3-thiazolidinylmethanone HBr
CAS:906093-29-6
Teneligliptin HBr (2S,4S)-Teneligliptin HBr
TGT00H

[(2S,4S)-4-[4-(3-Methyl-1-phenyl-1H-pyrazol-5-yl)-1-piperazinyl]-2-pyrrolidinyl]-3-thiazolidinylmethanone sulfoxide
Teneligliptin Sulfoxide
TGT55B

[(3-exo)-8-Methyl-8-azabicyclo[3.2.1]oct-3-yl]thio]acetic Acid
CAS:224452-66-8
Retapamulin
RTP00

[(3R)-3-[[(1R)-1-(Ethoxycarbonyl)-3-phenylpropyl]-amino]-2-oxo-2,3,4,5-tetrahydro-1H-1-benzazepin-1-yl]acetic acid
CAS:131064-75-0
Benazepril EP Impurity A (Base) Benazepril USP RC
BNZ01B

[(3R)-3-[[(1R)-1-(Ethoxycarbonyl)-3-phenylpropyl]-amino]-2-oxo-2,3,4,5-tetrahydro-1H-1-benzazepin-1-yl]acetic acid hydrochloride
CAS:215447-89-5
Benazepril EP Impurity A (HCl) Benazepril USP RC
BNZ01H

[(3RS)-3-[[(1SR)-1-(Ethoxycarbonyl)-3-phenylpropyl]-amino]-2-oxo-2,3,4,5-tetrahydro-1H-1-benzazepin-1-yl]acetic acid HCl
CAS:88372-39-8
Benazepril EP Impurity B
BNZ02H

[(3RS,6RSand3R,6S-Meso)-2,5-Dihydroxy-2,5-dioxo-3,6-bis[(pyridin-3-yl)methyl]-1,4,2?5,5?5-dioxadiphosphinane-3,6-diyl]bis(phosphonic acid) disodium salt
CAS:1486466-30-1
Risedronate EP Impurity A Risedronate USP RC B
RDN01N

[(3S)-3-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]-2-oxo-2,3,4,5-tetrahydro-1H-1-benzazepin-1-yl]acetic acid
CAS:86541-75-5
Benazepril (Base)
BNZ00B

[(3S)-3-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]-2-oxo-2,3,4,5-tetrahydro-1H-1-benzazepin-1-yl]acetic acid hydrochloride
CAS:86541-74-4
Benazepril (HCl)
BNZ00H

[(3S)-3-[[(1S)-3-Cyclohexyl-1-(ethoxycarbonyl)propyl]-amino]-2-oxo-2,3,4,5-tetrahydro-1H-1-benzazepin-1-yl]acetic acid HCl
CAS:112110-48-2
Benazepril EP Impurity D Benazepril USP RC D
BNZ04H

[(3S)-3-Amino-2-oxo-2,3,4,5-tetrahydro-1H-1-benzazepin-1-yl]acetic acid
CAS:88372-47-8
Benazepril EP Impurity E Benazepril USP RC E
BNZ05

[(3S,4R)-1-BENZYL-4-(4-FLUOROPHENYL)PIPERIDIN-3-YL]METHANOL
CAS:201855-60-9
Paroxetine HCl Hemihydrate EP Impurity H Paroxeti
PRX08

[(4-{N'-[(Hexyloxy)carbonyl]carbamimidoyl}phenyl)amino]acetic acid
Dabigatran RC 12
DBG82B

[(4-Aminophenyl)sulfonyl]guanidine
CAS:57-67-0
Sulfadiazine EP Impurity C (Anhydrous) Sulfadiazi
SDZ03A

[(4-Aminophenyl)sulfonyl]guanidine monohydrate
CAS:6190-55-2
Sulfadiazine EP Impurity C (Monohydrate) Sulfadia
SDZ03H

[(5RS)-3-Cyclohexyl-5-methyl-4,5-dihydro-1,2-oxazol-5yl]acetic acid
CAS:1823487-53-1
Ciclopirox EP Impurity A Ciclopirox USP RC A
CPX01

[(RS)-[(1SR)-2-Methyl-1-(1-oxopropoxy)propoxy](4-phenylbutyl)phosphoryl]acetic acid
CAS:123599-78-0
Fosinopril EP Impurity I
FSN09

[[(1R)-2-(6-AMINO-9H-PURIN-9-YL)-1-METHYLETHOXY]METHYL]MONOPHENYLESTER
CAS:379270-35-6
Tenofovir Monophenyl Ester Impurity Monophenyl PM
TNF53

[[(2R)-Aminophenylacetyl]amino][(4S)-4-[[[[[(2S,5R)-3,3-dimethyl-4,4,7-trioxo-4.6-thia-1-azabicyclo[3.2.0]-hept-2-yl]carbonyl]oxy]methoxy]carbonyl]-5,5-dimethylthiazolidin-2-yl]acetic acid
Sultamicillin EP Impurity D Penicilloic Acids of
STM04

[[(2RS)-2-[(Acetylsulfanyl)methyl]-3-phenylpropanoyl]-amino]acetic acid
CAS:124735-06-4
Racecadotril EP Impurity C Hemiacetorphan
RCT03

[[(2RS)-2-Benzyl-3-sulfanylpropanoyl]amino]acetic acid
CAS:76721-89-6
Racecadotril EP Impurity B Thiorphan
RCT02

[[[[[[[2-[(2,6-Dichlorophenyl) amino] phenyl] acetyl]oxy] acetyl] oxy] acetyl] oxy] acetic acid
CAS:1216495-92-9
Aceclofenac EP Impurity H Diacetic Aceclofenac
ACF08

[[[[[1-(4-CHLOROBENZOYL)-5-METHOXY-2-METHYL-1H-INDOL-3-YL]ACETYL]OXY]ACETYL]OXY]ACETIC ACID
CAS:76812-49-2
Acemetacin EP Impurity F Carboxymethyl Acemetacin
ACM06

[[[[[2-[(2,6-Dichlorophenyl) amino] phenyl] acetyl] oxy] acetyl] oxy] acetic acid
CAS:1215709-75-3
Aceclofenac EP Impurity G Acetic Aceclofenac
ACF07

[[[1-(3,4-Dichlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetyl]oxy]acetic acid
Acemetacin EP Impurity C
ACM03

[[[1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetyl]oxy]acetic acid
CAS:53164-05-9
Acemetacin
ACM00

[[[1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetyl]oxy]acetic acid ethyl ester
CAS:76812-43-6
Acemetacin Ethyl Ester
ACM52

[[[1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetyl]oxy]acetic acid methyl ester
CAS:681838-84-6
Acemetacin Methyl Ester
ACM51

[[[1-(4-Chlorobenzoyl)-6-(1,1-dimethylethyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetyl]oxy]acetic acid
CAS:76812-64-1
Acemetacin EP Impurity D 6-t-Butyl Acemetacin
ACM04

[[[2-[(2,6-Dichlorophenyl)amino]phenyl]acetyl]oxy]acetic acid
CAS:89796-99-6
Aceclofenac
ACF00

[[2-(6-Amino-9H-purin-9-yl)ethoxy]methyl]-phosphonic acid monoethyl ester
CAS:116384-54-4
Adefovir O-Ethyl Analog
AFD54

[[6a,9-Difluoro-11�-hydroxy-16a-methyl-3-oxo-17-(propanoyloxy) androsta-1,4-dien-17�-yl]carbonyl]sulphenic acid
CAS:948566-12-9
Fluticasone EP Impurity B Fluticasone USP RC A F
FLT02

[1,2,4]TRIAZOLO[4,3-A]PYRIDIN-3(2H)-ONE
CAS:6969-71-7
Trazodone EP Impurity K (Base) Trazodone Triazolo
TZD11B

[1,3-DICHLORO-6-(TRIFLUOROMETHYL)PHENANTHREN-9-YL]METHANOL
CAS:38492-81-8
Halofantrine EP Impurity C
HFT03

[1,4�-Bipiperidine]-1�-carboxylic acid (4S)-4,11-diethyl-3,4,12,14- tetrahydro-4-hydroxy-3,14-dioxo-1H-pyrano[3�,4�6,7]indolizino[1,2-b]quinolin-9-yl ester
CAS:97682-44-5
Irinotecan (Base)
ITC00B

[1-(2-aminoethyl)cyclohexyl]acetic acid
CAS:1500558-49-5
Gabapentin EP Impurity G (Base)
GBP07B

[1-(2-aminoethyl)cyclohexyl]acetic acid HCl
CAS:1864053-94-0
Gabapentin EP Impurity G (HCl)
GBP07H

[1-(2-Deoxy-beta-D-ribofuranosyl)]thymine
CAS:50-89-5
Stavudine EP Impurity C Zidovudine EP Impurity E
STV03

[1-(2-Deoxy-beta-D-ribofuranosyl)]thymine
CAS:50-89-5
Zidovudine EP Impurity E Zidovudine USP RC D Sta
ZDV05

[1-(3,4-Dichlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetic acid
CAS:402849-26-7
Indomethacin EP Impurity G Indomethacin 3,4-DiChl
IDM07

[1-(3-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetic acid
Indomethacin EP Impurity D Indomethacin 2-Chloro
IDM04

[1-(4-Chlorobenzoyl)-5-methoxy-2methylindol-3-yl]acetic acid
CAS:53-86-1
Acemetacin EP Impurity B Indomethacin
ACM02

[1-[[[(1R)-1-[3-[(E)-2-(7-Chloroquinolin-2-yl) ethenyl] phenyl]-3-[2-(1,2-dihydroxy propan- 2-yl)phenyl] propyl] sulfanyl] methyl] cyclopropyl] acetic acid
CAS:186352-97-6
Montelukast 1,2-Diol
MTL42

[1-[[[(1R)-1-[3-[(E)-2-(7-Chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(prop-1-en-2- yl)phenyl]propyl] sulfanyl]methyl]cyclopropyl]acetic acid
CAS:918972-54-0
Montelukast EP Impurity B Montelukast USP RC F M
MTL02

[1-[[[(1R)-1-[3-[(Z)-2-(7-Chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(2-hydroxy propan- 2-yl)phenyl]propyl]sulfanyl]methyl]cyclopropyl]acetic acid
CAS:774538-96-4
Montelukast EP Impurity G Montelukast USP RC B M
MTL07

[1-[[[(1R)-3-(2-Acetylphenyl)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]propyl]sulfanyl] methyl]cyclopropyl]acetic acid
CAS:937275-23-5
Montelukast EP Impurity F Montelukast USP RC E M
MTL06

[1-[2-Oxo-2-[[4-[4-(pyrimidin-2-yl)piperazin-1-yl]butyl]amino]ethyl] cyclopentyl]acetic acid
CAS:257877-43-3
Buspirone EP Impurity E (Base) Buspirone Open-Rin
BPR05B

[1-[2-Oxo-2-[[4-[4-(pyrimidin-2-yl)piperazin-1-yl]butyl]amino]ethyl] cyclopentyl]acetic acid HCl
CAS:257877-46-6
Buspirone EP Impurity E (HCl) Buspirone Open-Ring
BPR05H

[1-[4-[4-(1,1-Dimethylethyl)phenyl]but-3-enyl]piperidin-4-yl]diphenylmethanol
CAS:104953-06-2
Terfenadine EP Impurity G
TFN07

[1-[4-[4-(1,1-Dimethylethyl)phenyl]butyl]-piperidin-4-yl]diphenylmethanol
CAS:147158-67-6
Terfenadine EP Impurity H
TFN08

[1-[5-Deoxy-2-O-(5-deoxy-�-D-ribofuranosyl)-�-D-ribofuranosyl]-5-fluoro-2-oxo-1,2-dihydropyrimidin-4-yl]-carbamic acid pentyl ester
CAS:1262133-66-3
Capecitabine 2-O-BDR Impurity (USP) 2�-O-(5�-Deox
CPC52

[1-[5-Deoxy-3-O-(5-deoxy-�-D-ribofuranosyl)-�-D-ribofuranosyl]-5-fluoro-2-oxo-1,2-dihydropyrimidin-4-yl]-carbamic acid pentyl ester
CAS:1262133-64-1
Capecitabine 3-O-BDR Impurity (USP) 3�-O-(5�-Deox
CPC53

[1-Hydroxy-2-(3-pyridinyl)ethylidene]bisphosphonic acid
CAS:105462-24-6
Risedronic Acid
RDN00A

[1-Hydroxy-2-(3-pyridinyl)ethylidene]bisphosphonic acid monosodium salt
CAS:115436-72-1
Risedronate Sodium Risedronic Acid Sodium Salt
RDN00N

[1-Hydroxy-2-(3-pyridinyl)ethylidene]bisphosphonic acid monosodium salt hemipentahydrate
CAS:329003-65-8
Risedronate Sodium (Hemipentahydrate) Risedronic
RDN00X

[1-HYDROXY-2-(PYRIDIN-2-YL)ETHYLIDENE]BIS(PHOSPHONIC ACID)
CAS:105462-23-5
Risedronate EP Impurity B (Acid) Risedronate USP
RDN02A

[1-HYDROXY-2-(PYRIDIN-2-YL)ETHYLIDENE]BIS(PHOSPHONIC ACID)
CAS:1220806-40-5
Risedronate EP Impurity B (Acid Monohydrate) Rise
RDN02X

[1-Hydroxy-2-(pyridin-2-yl)ethylidene]bis(phosphonic acid) monosodium salt
Risedronate EP Impurity B (Na) Risedronate USP RC
RDN02N

[1-HYDROXY-2-(PYRIDIN-4-YL)ETHYLIDENE]BIS(PHOSPHONIC ACID)
CAS:105462-25-7
Risedronate EP Impurity C (Acid)
RDN03A

[1-Hydroxy-2-(pyridin-4-yl)ethylidene]bis(phosphonic acid) monosodium salt
Risedronate EP Impurity C (Na)
RDN03N

[1-Hydroxy-3-(methylpentylamino)propylidene]bisphosphonic acid
CAS:114084-78-5
Ibandronic (Acid)
IBD00A

[1-Hydroxy-3-(methylpentylamino)propylidene]bisphosphonic acid sodium salt
CAS:138844-81-2
Ibandronate Sodium (Anhydrous)
IBD00X

[1-Hydroxy-3-(methylpentylamino)propylidene]bisphosphonic acid sodium salt monohydrate
CAS:138926-19-9
Ibandronate Sodium (Monohydrate)
IBD00N

[1-Hydroxy-3-(methylpentylamino)propylidene]bisphosphonic acid tetramethyl ester
CAS:1076199-42-2
Ibandronate Tetramethyl Ester
IBD54

[17'-Hydroxyspiro[1,3-dioxolan-2,3'-estra-5'(10'),9'(11')-dien]-17'a-yl]acetonitrile
CAS:190662-30-7
Dienogest EP Impurity D
DEG04

[17-Hydroxy-3,3-dimethoxyestra-5(10),9(11)-dien-17a-yl]-acetonitrile
CAS:102193-41-9
Dienogest EP Impurity E Dienogest Dimethoxy Impur
DEG05

[17-Hydroxy-3-oxoestra-5(10),9(11)-dien-17a-yl]-acetonitrile
CAS:106111-42-6
Dienogest EP Impurity C
DEG03

[1aR-(1aa,2�,3aa,5a,5aa,5ba)]-5b-[(Benzoyloxy)methyl]tetrahydro-5-hydroxy-2-methyl-2,5-methano-1H-3,4-dioxacyclobuta[cd]pentalen-1a(2H)-yl �-D-Glucopyranoside
CAS:23180-57-6
Paeoniflorin
PFR00

[1aR-(1aa,2�,3aa,5a,5aa,5ba)]-5b-[(Benzoyloxy)methyl]tetrahydro-5-hydroxy-2-methyl-2,5-methano-1H-3,4-dioxacyclobuta[cd]pentalen-1a(2H)-yl, 6-benzoate �-D-Glucopyranoside
CAS:38642-49-8
Paeoniflorin Benzoyl Impurity
PFR50

[1S-[1a,3a,4�,6a,7�,8�(2S*,4S*),8a�]]-Butanoic Acid 2,2-Dimethyl-1,2,3,4,6,7,8,8a- octahydro-4,6-dihydroxy-3,7-dimethyl-8-[2-(tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl) ethyl]-1-naphthalenyl ester
CAS:198818-02-9
Simvastatin Dihydro Diol Impurity 3',5'-Dihydro D
SVS42

[2,3-Dichloro-4-(2-methylenebutanoyl)phenoxy]acetic acid
CAS:58-54-8
Etacrynic Acid Ethacrynic Acid
ECN00

[2,3-Dichloro-4-[2-(chloromethyl)butanoyl]-phenoxy]acetic acid
CAS:27929-18-6
Etacrynic Acid EP Impurity B Ethacrynic Acid 2-Ch
ECN02

[2,8-BIS(TRIFLUOROMETHYL)QUINOLIN-4-YL](PYRIDIN-2-YL)METHANONE
CAS:35853-55-5
Mefloquine EP Impurity A
MFQ01B

[2-(4-Hydroxyphenyl)-6-methoxybenzo[b]thien-3-yl][4-[2-(1-piperidinyl)ethoxy] phenyl]methanone
CAS:178451-13-3
Raloxifene 6-Methoxy Analog
RLX56

[2-(4-SULPHAMOYLPHENYL) ETHYL] 5-METHYL-PYRAZINE-2-CARBOXAMIDE
CAS:33288-71-0
Glipizide EP Impurity A Glipizide USP RC A Glipi
GLP01B

[2-(Pyridin-3-yl)ethylidene]bis(phosphonic acid) [2-(3-Pyridinyl)ethylidene-1,1]bis(phosphonic acid)
CAS:75755-10-1
Risedronate EP Impurity E Risedronate USP RC C D
RDN05

[2-[(1R)-3-(Di(propan-2-yl)amino)-1-phenylpropyl]-4-(hydroxymethyl)phenyl] 2-methylpropanoate
CAS:286930-02-7
Fesoterodine (Base) Fesoterodine R-Isomer
FST00B

[2-[(1R)-3-(Di(propan-2-yl)amino)-1-phenylpropyl]-4-(hydroxymethyl)phenyl] 2-methylpropanoate fumarate
CAS:286930-03-8
Fesoterodine Fumarate (R)-Fesoterodine Fumarate
FST00F

[2-[(1R)-3-(DI(PROPAN-2-YL)AMINO)-1-PHENYLPROPYL]-4-FORMYLPHENYL] ISOBUTYRATE
CAS:1435768-96-9
Fesoterodine Impurity F Fesoterodine Isobutyrate
FST06B

[2-[(1RS)-1-Methoxybutyl] benzofuran-3-yl][4-[2-(diethylamino) ethoxy]-3,5-diiodophenyl] methanone
CAS:1087223-70-8
Amiodarone EP Impurity G (Base) Amiodarone USP RC
ADR07B

[2-[(1RS)-1-Methoxybutyl] benzofuran-3-yl][4-[2-(diethylamino) ethoxy]-3,5-diiodophenyl] methanone oxalate
Amiodarone EP Impurity G (Oxalate) Amiodarone USP
ADR07X

[2-[(1S)-3-(Di(propan-2-yl)amino)-1-phenylpropyl]-4-(hydroxymethyl)phenyl] 2-methylpropanoate fumarate
CAS:1431511-18-0
Fesoterodine S-Isomer Fumarate
FST40F

[2-[(2,6-Dichlorophenyl)amino]phenyl]acetic acid
CAS:15307-86-5
Diclofenac (Acid) Aceclofenac EP Impurity A (Acid
DCF00A

[2-[(2,6-Dichlorophenyl)amino]phenyl]acetic acid
CAS:15307-86-5
Aceclofenac EP Impurity A (Acid) Diclofenac (Acid
ACF01A

[2-[(2,6-dichlorophenyl)amino]phenyl]acetic acid diethylamine
CAS:78213-16-8
Diclofenac (Diethylamine Salt) Diclofenac Diethyl
DCF00D

[2-[(2,6-DICHLOROPHENYL)AMINO]PHENYL]METHANOL
CAS:27204-57-5
Diclofenac EP Impurity C Diclofenac USP RC C
DCF03

[2-[(2RS)-4-Benzyl-2-phenylpiperazin-1-yl]phenyl]methanol
CAS:157994-98-4
Mianserin EP Impurity D
MSR04

[2-[(2RS)-4-Methyl-2-phenylpiperazin-1-yl]phenyl]methanol
CAS:57321-32-1
Mianserin EP Impurity A
MSR01

[2-[(5-Nitro-1,3-thiazol-2-yl)carbamoyl]phenyl]ethanoate
CAS:55981-09-4
Nitazoxanide
NTZ00

[2-[[(4S,6S)-6-Methyl-7,7-dioxo-2-sulfamoyl-4,5,6,7-tetrahydro-7?6 -thieno[2,3-b]thiopyran-4-yl]amino]ethyl]boronic acid HCl
Dorzolamide EP Impurity C (HCl) N-Desethyl-N-(2-B
DZL03H

[2-[[[2-[2-Amino-3-hydroxy-2-(hydroxymethyl)propoxy]-1-hydroxypropyl] hydroxyphosphoryl]oxy]-1-hydroxypropyl]phosphonic acid
CAS:1262243-12-8
Fosfomycin EP Impurity D Trometamoyloxy Fosfomyci
FFM04A

[2-[2-(3-Ethyl-4-methyl-2-oxo-3-pyrroline-1-carboxamido) ethyl] phenyl] sulfonamide
Glimepiride Sulfonamide ortho-Isomer
GLM42

[2-[2-Amino-3-hydroxy-2-(hydroxymethyl)propoxy]-1-hydroxypropyl] phosphonic acid
CAS:1262243-11-7
Fosfomycin EP Impurity B
FFM02A

[2-[3-(Di(propan-2-yl)amino)-1-phenylpropyl]-4-(hydroxymethyl)phenyl] 2-methylpropanoate
CAS:250214-44-9
Fesoterodine Impurity H (Base) Fesoterodine Racem
FST08B

[2-[3-(Di(propan-2-yl)amino)-1-phenylpropyl]-4-(hydroxymethyl)phenyl] 2-methylpropanoate fumarate
CAS:1333234-73-3
Fesoterodine Impurity H (Fumarate) Fesoterodine F
FST08F

[2-[3-(Di(propan-2-yl)amino)-1-phenylpropyl]-4-formylphenyl] isobutyrate
CAS:1333234-71-1
Fesoterodine Impurity E Fesoterodine Isobutyrate
FST05B

[2-[4-(AMINOSULFONYL)PHENYL]ETHYL]CARBAMIC ACID ETHYL ESTER
CAS:192118-08-4
Glipizide EP Impurity F Glipizide BP Impurity F
GLP06

[2-[4-(DIPHENYLMETHYL)PIPERAZIN-1-YL]ETHOXY]ACETIC ACID
CAS:83881-53-2
Cetirizine EP Impurity F (Base) Deschloro Cetiriz
CTR06B

[2-[4-(DIPHENYLMETHYL)PIPERAZIN-1-YL]ETHOXY]ACETIC ACID DIHYDROCHLORIDE
CAS:83881-54-3
Cetirizine EP Impurity F (2HCl) Deschloro Cetiriz
CTR06H

[2-[4-Methyl-2-phenylpiperazin-1-yl]pyridin-3-yl]methanol 2-(4-Methyl-2-phenyl-1-piperazinyl)-3-pyridine-methanol
CAS:61337-89-1
Mirtazapine EP Impurity B
MTZ02

[2-Amino-6-[(phenylmethyl)amino]-3-pyridinyl]carbamic acid ethyl ester
CAS:736866-91-4
Flupirtine Desfluoro Impurity (Base)
FPT51B

[2-Amino-6-[(phenylmethyl)amino]-3-pyridinyl]carbamic acid ethyl ester HCl
CAS:21630-56-8
Flupirtine Desfluoro Impurity (HCl)
FPT51H

[2R-(2a,3�,6a)]-3-Azido-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]octane-2-carboxylic Acid 5,5-Dioxide Diphenylmethyl Ester
CAS:104862-31-9
Tazobactam RC 2
TZB62

[2R-[2a,2(S*),3a,6�[2S*,3E,5E,7E,9S*,11R*,13R*,14R*,15E,17R*,19E/Z,21R*,22(1S*,3R*,4R*)]]]-1-[Oxo[tetrahydro-2-hydroxy-6-[14-hydroxy-22-(4-hydroxy-3-methoxycyclohexyl)-2,13-dimethoxy-3,9,11,15,17,21-hexamethyl-12,18-dioxo-3,5,7,15,19-docosapentaenyl]-3-me
CAS:148554-65-8
Rapamycin Open-Ring Anhydro Acid Sodium Salt Seco
RPM35N

[2R-[2a,2(S*),3a,6�[2S*,3E,5E,7E,9S*,11R*,13R*,14R*,15E,17R*,19E/Z,21R*,22(1S*,3R*,4R*)]]]-1-[Oxo[tetrahydro-2-hydroxy-6-[14-hydroxy-22-(4-hydroxy-3-methoxycyclohexyl)-2,13-dimethoxy-3,9,11,15,17,21-hexamethyl-12,18-dioxo-3,5,7,15,19-docosapentaenyl]-3-me
CAS:147438-27-5
Rapamycin Open-Ring Anhydro Acid Secorapamycin
RPM35A

[2S-(2a,3�,3aa,6a,6aa,9a,10a�,10ba)]-Decahydro-3,6,9-trimethyl-10aH-9,10b-epoxypyrano[4,3,2-jk][2]benzoxepin-2-ol acetate
CAS:90935-12-9
Artemisinin O-Acetyl Deoxy Dihydro Impurity
ATX67

[3,17-Dihydroxyestra-1,3,5(10),9(11)-tetraen-17a-yl]-acetonitrile
CAS:86153-38-0
Dienogest EP Impurity G ?9,11-Dehydro-17a-Cyanome
DEG07

[3,4-DIFLUORO-2-[(2-FLUORO-4-IODOPHENYL)AMINO]PHENYL][3-HYDROXY-3-[(2S)-2-PIPERIDINYL]-1-AZETIDINYL]METHANONE
CAS:934660-93-2
Cobimetinib
CMB00B

[3,4-Difluoro-2-[(2-fluoro-4-iodophenyl)amino]phenyl][3-hydroxy-3-[(2S)-2-piperidinyl]-1-azetidinyl]methanone fumarate
CAS:1369665-02-0
Cobimetinib fumarate
CMB00F

[3-(10,11-Dihydro-5H-dibenz[b,f]azepin-5-yl)propyl]methyl-carbamic acid ethyl ester
CAS:27097-69-4
Desipramine RC 1 Desipramine Ethyl Carbamate
DRM61

[3-(10,11-Dihydro-5H-dibenzo[a,d][7]annulen-5-ylidene)propyl]dimethylamine oxide
CAS:4317-14-0
Amitriptyline N-Oxide (Base) Nortriptyline EP Imp
ATL50B

[3-(10,11-Dihydro-5H-dibenzo[a,d][7]annulen-5-ylidene)propyl]dimethylamine oxide
CAS:4317-14-0
Nortriptyline EP Impurity J Amitriptyline N-Oxide
NTL10B

[3-(10,11-Dihydro-5H-dibenzo[a,d][7]annulen-5-ylidene)propyl]dimethylamine oxide HCl
CAS:4290-60-2
Nortriptyline EP Impurity J (HCl) Amitriptyline N
NTL10H

[3-(10,11-Dihydro-5H-dibenzo[a,d][7]annulen-5-ylidene)propyl]dimethylamine oxide hydrochloride
CAS:4290-60-2
Amitriptyline N-Oxide (HCl) Nortriptyline EP Impu
ATL50H

[3-(2-AMINOETHYL)-1H-INDOL-5-YL]-N-METHYLMETHANESULPHONAMIDE
CAS:88919-22-6
Sumatriptan EP Impurity E N,N-DiDesmethyl Sumatri
SMT05

[3-[[(2R,3S)-2-[(1R)-1-[3,5-bis(Trifluoromethyl)phenyl]ethoxy]-3-(4-fluorophenyl)-4-morpholinyl]methyl]-2,5-dihydro-5-oxo-1H-1,2,4-triazol-1-yl]-phosphonic acid bis(phenylmethyl) ester
CAS:265121-01-5
Fosaprepitant Dibenzyl Ester
FSP62

[3-[[(2R,3S)-2-[(1R)-1-[3,5-Bis(Trifluoromethyl)phenyl]ethoxy]-3-(4-fluorophenyl)-4-morpholinyl]methyl]-2,5-dihydro-5-oxo-1H-1,2,4-triazol-1-yl]-phosphonic acid mono(phenylmethyl) ester
CAS:889852-02-2
Fosaprepitant Monobenzyl Ester
FSP61

[3-[[2-Methoxy-4-[[[(2-methylphenyl)sulfonyl]amino]carbonyl]phenyl]methyl]-1-methyl-1H-indol-5-yl]carbamic acid 3-hydroxycyclopentyl ester
CAS:219582-85-1
Zafirlukast M6 Metabolite
ZFL76

[3-[[2-METHOXY-4-[[[(2-METHYLPHENYL)SULFONYL]AMINO]CARBONYL]PHENYL]METHYL]-1-METHYL-1H-INDOL-5-YL]CARBAMIC ACID CYCLOPENTYL ESTER
CAS:107753-78-6
Zafirlukast
ZFL00

[3-[2-(Dimethylamino)ethyl]-1-(hydroxymethyl)-1H-indol-5-yl]-N-methyl methanesulphonamide
CAS:1797905-62-4
Sumatriptan EP Impurity C Sumatriptan USP RC C N
SMT03

[3-[2-(Dimethylamino)ethyl]-1-[[3-[2-(dimethylamino)ethyl]-1H-indol-5-yl]methyl]-1H-indol-5-yl]-N-methylmethanesulphonamide.
CAS:1391052-59-7
Sumatriptan EP Impurity H Sumatriptan C,N-Dimer
SMT08

[3-[2-(Dimethylamino)ethyl]-2-[[3-[2-(dimethylamino)ethyl]-1H-indol-5-yl] methyl]-1H-indol-5-yl]-N-methylmethanesulphonamide
CAS:545338-89-4
Sumatriptan EP Impurity A (Base) Sumatriptan USP
SMT01B

[3-[2-(Dimethylamino)ethyl]-2-[[3-[2-(dimethylamino)ethyl]-1H-indol-5-yl] methyl]-1H-indol-5-yl]-N-methylmethanesulphonamide succinate salt
Sumatriptan EP Impurity A (Succinate) Sumatriptan
SMT01S

[3-{[(2R,3R)-2-[(1R)-1-[3,5-bis(Trifluoromethyl)phenyl] ethoxy]-3-(4-fluoro phenyl)morpholin-4-yl]methyl}-5-oxo- 2H-1,2,4-triazol-1-yl]phosphonic acid dimeglumine salt
Fosaprepitant (R,R,R)-Isomer (Dimeglumine) (1'R,2
FSP45M

[3-{[(2R,3S)-2-[(1R)-1-[3,5-bis(Trifluoromethyl)phenyl] ethoxy]-3-(4-fluoro phenyl)morpholin-4-yl]methyl}-5-oxo- 2H-1,2,4-triazol-1-yl]phosphonic acid
CAS:172673-20-0
Fosaprepitant Fosaprepitant Acid (1'R,2R,3S)-Fos
FSP00A

[3-{[(2R,3S)-2-[(1R)-1-[3,5-bis(Trifluoromethyl)phenyl] ethoxy]-3-phenyl morpholin-4-yl]methyl}-5-oxo- 2H-1,2,4-triazol-1-yl]phosphonic acid
Fosaprepitant Impurity E Fosaprepitant Desfluoro
FSP55A

[3-{[(2R,3S)-2-[(1R)-1-[3,5-bis(Trifluoromethyl)phenyl]ethoxy]-3-(4-fluoro phenyl)morpholin-4-yl]methyl}-5-oxo- 2H-1,2,4-triazol-1-yl]phosphonic acid dimeglumine salt
CAS:265121-04-8
Fosaprepitant Dimeglumine (1'R,2R,3S)-Fosaprepita
FSP00M

[3-{[(2R,3S)-2-[(1S)-1-[3,5-bis(Trifluoromethyl)phenyl] ethoxy]-3-(4-fluoro phenyl)morpholin-4-yl]methyl}-5-oxo- 2H-1,2,4-triazol-1-yl]phosphonic acid
Fosaprepitant Impurity D (1'S,2R,3S)-Fosaprepitan
FSP54A

[3-{[(2S,3R)-2-[(1S)-1-[3,5-bis(Trifluoromethyl)phenyl] ethoxy]-3-(4-fluoro phenyl)morpholin-4-yl]methyl}-5-oxo- 2H-1,2,4-triazol-1-yl]phosphonic acid
Fosaprepitant Enantiomer ent-Fosaprepitant (1'S,
FSP44A

[3-ETHOXY-4-(ETHOXYCARBONYL)PHENYL]ACETIC ACID
CAS:99469-99-5
Repaglinide EP Impurity B Repaglinide USP RC B
RPG02

[3R-[3R*(1R*,3R*,4R*),4E,6S*,7S*,10R*,11E,14S*,16S*,17R*,18S*,20R*,21R*,28aS*]]-7,8,10,13,14,15,16,17,18,19,20,21,26,27,28,28a-Hexadecahydro-7,21-dihydroxy-3-(4-hydroxy-3-methoxycyclohexyl)-16,18-dimethoxy-4,6,12,14,20-pentamethyl-10-(2-propenyl)-17,21-ep
CAS:131944-48-4
Tacrolimus Rearrangement Lactone
TCL62

[3S-[2[R*(R*)],3R*]]-2-[2-[(1-Carboxy-3-phenylpropyl)amino]-1-oxopropyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid
CAS:82768-85-2
Quinapril EP Impurity C Quinapril USP RC B Quina
QPR03

[3S-[2[R*(R*)],3R*]]-2-[2-[[1-(Ethoxycarbonyl)-3-phenylpropyl]amino]-1-oxopropyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid ethyl ester
CAS:103733-35-3
Quinapril Ethyl Ethyl Di-Ester (Base)
QPR34B

[3S-[2[R*(R*)],3R*]]-2-[2-[[1-(Ethoxycarbonyl)-3-phenylpropyl]amino]-1-oxopropyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid ethyl ester maleate
CAS:103733-36-4
Quinapril Ethyl Ethyl Di-Ester (Maleate)
QPR34M

[3S-[2[R*(R*)],3R*]]-2-[2-[[1-(Ethoxycarbonyl)-3-phenylpropyl]amino]-1-oxopropyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid isopropyl ester
Quinapril Ethyl Isopropyl Di-Ester
QPR35

[3S-[2[R*(R*)],3R*]]-2-[2-[[1-(Ethoxycarbonyl)-3-phenylpropyl]amino]-1-oxopropyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid methyl ester
Quinapril Ethyl Methyl Di-Ester
QPR36

[3S-[2[R*(R*)],3R*]]-2-[2-[[1-(Isopropyloxycarbonyl)-3-phenylpropyl]amino]-1-oxopropyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid isopropyl ester
Quinapril Isopropyl Isopropyl Di-Ester
QPR45

[3S-[2[R*(R*)],3R*]]-2-[2-[[1-(Methoxycarbonyl)-3-phenylpropyl]amino]-1-oxopropyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid methyl ester
Quinapril Methyl Methyl Di-Ester
QPR46

[3S-[3R*[1R*,2R*,4(1S*,3S*,4S*)],6S*,10R*,12R*,13R*,14R*,16S*,17S*,24aR*]]-6,9, 10,11,12,13,14,15,16,17,22,23,24,24a-Tetradecahydro-17-hydroxy-3-[2-hydroxy-4-(4-hydroxy-3-methoxycyclohexyl)-1,3-dimethyl-3-butenyl]-12,14-dimethoxy-8,10,16-trimethyl-6-(2-p
CAS:134590-88-8
Tacrolimus Lactone Isomer Iso-Tacrolimus Iso-FK-
TCL43

[3S-[3R*[E(1S*,3S*,4S*)],4S*,5R*,8S*,9E,12R*,14R*,15S*,16R*,18S*,19S*,25aR*]]- 3,4,5,6,8,11,12,13,14,15,16,17,18,19,23,24,25,25a-Octadecahydro-5,19-dihydroxy-3-[2-(4-hydroxy-3-methoxycyclohexyl)-1-methylethenyl]-14,16-dimethoxy-4,10,12,18-tetramethyl-8-(2
CAS:123719-19-7
Tacrolimus Desketo Impurity 9-Norketo Tacrolimus
TCL53

[4-(1,1-DIMETHYLETHYL)-2,6-DIMETHYLPHENYL]ACETIC ACID
CAS:854646-92-7
Xylometazoline EP Impurity F
XMZ06

[4-(1,1-Dimethylethyl)-2,6-dimethylphenyl]acetonitrile
CAS:84803-57-6
Xylometazoline EP Impurity C
XMZ03

[4-(1-Carboxy-1-methylethoxy)phenyl](4-chlorophenyl)methyl �-D-Glucopyranosiduronic Acid
CAS:168844-26-6
Fenirofibrate O-�-D-Glucuronide
FNF53

[4-(2,5-Diamino-6-chloropyrimidin-4-ylamino)cyclopent-2-enyl]methanol
CAS:141271-12-7
Abacavir USP RC B
ABC22B

[4-(4-AMINOPHENOXY)(2-PYRIDYL)]-N-METHYLCARBOXAMIDE
CAS:284462-37-9
Sorafenib EP Impurity A Sorafenib Aminophenoxy Im
SRF01

[4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]acetic acid
CAS:67-30-1
Liothyronine EP Impurity D Tetraiodothyroacetic A
LTN04

[4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]acetic acid 2-(4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)acetic acid
CAS:67-30-1
Levothyroxine EP Impurity D Levothyroxine T4-Ace
LTX04

[4-(4-Hydroxy-3-iodophenoxy)-3,5-diiodophenyl]acetic acid
CAS:51-24-1
Liothyronine EP Impurity C Triiodothyroacetic Aci
LTN03

[4-(4-Hydroxy-3-iodophenoxy)-3,5-diiodophenyl]acetic acid
CAS:51-24-1
Levothyroxine EP Impurity C Triiodothyroacetic ac
LTX03

[4-[[(4-Fluorophenyl)methyl]amino]-2-(�-D-glucopyranosylamino)phenyl]-carbamic acid ethyl ester
CAS:229970-69-8
Retigabine N-�-D-Glucoside
RGB52

[4-[2-(3-Ethyl-4-methyl-2-oxo-3-pyrroline-1-carboxamido) ethyl] phenyl] sulfonamide
CAS:119018-29-0
Glimepiride EP Impurity B Glimepiride USP RC B G
GLM02

[4-[2-[4-(Carboxymethoxy)-2,3-dichlorobenzoyl]-2,5-diethyl-3,4-dihydro-2H-pyran-6-yl]-2,3-dichlorophenoxy]acetic acid
CAS:25355-92-4
Etacrynic Acid EP Impurity C Etacrynic Acid USP R
ECN03

[4-HYDROXY-2-(4-HYDROXYPHENYL)BENZO[B]THIEN-3-YL][4-[2-(1-PIPERIDINYL)ETHOXY]PHENYL]-METHANONE
CAS:185416-01-7
Raloxifene 4-Hydroxy Analog
RLX52

[4R-[3(3S*,5S*),4a,5�,6�(R*)]]-3-[[5-[[(3�Carboxyphenyl)amino]carbonyl]-3-pyrrolidinyl]thio]-6-(1-hydroxyethyl)-4-methyl-7-oxo-1�azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid
CAS:153832-46-3
Ertapenem (Diacid)
ETP00A

[4S-(4a,4aa,5aa,12aa)]-4-(Dimethylamino)-7-(ethylmethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,10,12,12a-tetrahydroxy-1,11-dioxo-2-naphthacenecarboxamide
CAS:32598-29-1
Minocycline 7-Ethyl Analog (Base) 7-Ethylmethylam
MNC72B

[4S-(4a,4aa,5aa,12aa)]-4-(Dimethylamino)-7-(ethylmethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,10,12,12a-tetrahydroxy-1,11-dioxo-2-naphthacenecarboxamide
CAS:32598-29-1
Sancycline 7-Ethylmethylamino Impurity (Base)
SCC51B

[4S-(4a,4aa,5aa,12aa)]-4-(Dimethylamino)-7-(ethylmethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,10,12,12a-tetrahydroxy-1,11-dioxo-2-naphthacenecarboxamide HCl
CAS:149934-25-8
Sancycline 7-Ethylmethylamino Impurity (HCl)
SCC51H

[4S-(4a,4aa,5aa,12aa)]-4-(Dimethylamino)-7-(ethylmethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,10,12,12a-tetrahydroxy-1,11-dioxo-2-naphthacenecarboxamide HCl
CAS:149934-25-8
Minocycline 7-Ethyl Analog (HCl) 7-Ethylmethylami
MNC72H

[5-[(Dimethylamino)methyl]furan-2-yl]methanol
CAS:15433-79-1
Ranitidine EP Impurity F (Base)
RNT06B

[5-[(Dimethylamino)methyl]furan-2-yl]methanol HCl
CAS:81074-81-9
Ranitidine EP Impurity F (HCl)
RNT06H

[5-[2-Cyclopropyl-1-(2-fluorophenyl)-2-oxoethyl]-6,7-dihydro-4H-thieno[4,5-c]pyridin-2-yl] acetate
CAS:150322-43-3
Prasugrel (Base)
PRS00B

[5-[2-Cyclopropyl-1-(2-fluorophenyl)-2-oxoethyl]-6,7-dihydro-4H-thieno[4,5-c]pyridin-2-yl] acetate hydrochloride
CAS:389574-19-0
Prasugrel (HCl) Prasugrel Hydrochloride
PRS00H

[5-[2-Cyclopropyl-1-(3-fluorophenyl)-2-oxoethyl]-6,7-dihydro-4H-thieno[4,5-c]pyridin-2-yl] acetate
CAS:1391194-39-0
Prasugrel EP Impurity B (Base) Prasugrel meta-Flu
PRS02B

[5-[2-Cyclopropyl-1-(3-fluorophenyl)-2-oxoethyl]-6,7-dihydro-4H-thieno[4,5-c]pyridin-2-yl] acetate HCl
CAS:1391052-75-7
Prasugrel EP Impurity B (HCl) Prasugrel HCl meta-
PRS02H

[5-[2-Cyclopropyl-1-(4-fluorophenyl)-2-oxoethyl]-6,7-dihydro-4H-thieno[4,5-c]pyridin-2-yl] acetate
CAS:1391194-50-5
Prasugrel EP Impurity C (Base) Prasugrel para-Flu
PRS03B

[5-[2-Cyclopropyl-1-(4-fluorophenyl)-2-oxoethyl]-6,7-dihydro-4H-thieno[4,5-c]pyridin-2-yl] acetate HCl
CAS:1391053-98-7
Prasugrel EP Impurity C (HCl) Prasugrel HCl para-
PRS03H

[5-[2-Cyclopropyl-1-phenyl-2-oxoethyl]-6,7-dihydro-4H-thieno[4,5-c]pyridin-2-yl] acetate
CAS:1391194-45-8
Prasugrel EP Impurity A (Base) Desfluoro Prasugre
PRS01B

[5-[2-Cyclopropyl-1-phenyl-2-oxoethyl]-6,7-dihydro-4H-thieno[4,5-c]pyridin-2-yl] acetate HCl
CAS:1391053-53-4
Prasugrel EP Impurity A (HCl) Desfluoro Prasugrel
PRS01H

[6,6�-Dihydroxy-2,2�-bis(4-hydroxyphenyl)[7,7�-bibenzo[b]thiophene]-3,3�-diyl]bis[[4-[2-(1-piperidinyl)ethoxy]phenyl]methanone
CAS:618902-12-8
Raloxifene Dimer Impurity
RLX44

[6-[(4R)-4-Hydroxyproline]]caspofungin diacetate
Caspofungin EP Impurity F Caspofungin C0 Acetate
CSF06A

[6-[(Methylsulfonyl)oxy]-2-[4-[(methylsulfonyl)oxy]phenyl]benzo[b]thien-3-yl][4-[2-(1-piperidinyl)ethoxy]phenyl]methanone Hydrochloride
CAS:84449-85-4
Raloxifene Dimesylate HCl
RLX60H

[6-Hydroxy-2-(4-hydroxyphenyl)benzo[b]thien-3-yl][4-[2-(1-piperidinyl) ethoxy]phenyl]methanone
CAS:84449-90-1
Raloxifene (Base)
RLX00B

[6-Hydroxy-2-(4-hydroxyphenyl)benzo[b]thien-3-yl][4-[2-(1-piperidinyl) ethoxy]phenyl]methanone HCl
CAS:82640-04-8
Raloxifene (HCl)
RLX00H

[6-Hydroxy-2-(4-hydroxyphenyl)benzo[b]thien-3-yl][4-[2-(1-piperidinyl) ethoxy]phenyl]methanone N-oxide
CAS:195454-31-0
Raloxifene EP Impurity C Raloxifene USP RC C Ral
RLX03

[6-Hydroxy-2-(4-methoxyphenyl)benzo[b]thien-3-yl][4-[2-(1-piperidinyl)ethoxy] phenyl] methanone
CAS:185415-07-0
Raloxifene p-Methoxy Analog
RLX53

[6-Methoxy-2-(4-methoxyphenyl)benzo[b]thien-3-yl][4-[2-(1-piperidinyl) ethoxy]phenyl]methanone Raloxifene Bismethyl Ether
CAS:84541-38-8
Raloxifene Dimethoxy Impurity
RLX30

[6R-[6a,7�(R)]]-7-[(Aminophenylacetyl)amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 5-oxide
CAS:56193-21-6
Cefalexin Sulfoxide (Base)
CFL51B

[6R-[6a,7�(R*)]]-7-[(Aminophenylacetyl)amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 5-oxide trifluoroacetic acid salt
Cefalexin Sulfoxide (TFA Salt)
CFL51T

[6R-[6alpha,7beta(z)]]-3-[(Acetyloxy)methyl]-[[(2-amine-4-thiazolyl)(methoxyimino)acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4,2,0]oct-2-ene-2-carboxylic acid
CAS:63527-52-6
Cefotaxime (Acid)
CTX00A

[6R-[6alpha,7beta(z)]]-3-[(Acetyloxy)methyl]-[[(2-amine-4-thiazolyl)(methoxyimino)acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4,2,0]oct-2-ene-2-carboxylic acid monosodium salt
CAS:64485-93-4
Cefotaxime (Sodium)
CTX00N

[6�,11�,16a(R)]-16,17-[Butylidenebis(oxy)]-6,11,21-trihydroxy-pregna-1,4-diene-3,20-dione
CAS:93861-52-0
Budesonide RC 2
BDS62

[6�,11�,16a(S)]-16,17-[Butylidenebis(oxy)]-6,11,21-trihydroxy-pregna-1,4-diene-3,20-dione
CAS:93861-51-9
Budesonide RC 1
BDS61

[Oxybis(methanetriyl)]tetrabenzene
CAS:574-42-5
Dimenhydrinate EP Impurity K Ebastine EP Impurity
DMH11

{(2R,3S,4R,5R)-3,4-Dihydroxy-5-[(4Z)-4-(hydroxyimino)-2-oxo-3,4-dihydropyrimidin-1(2H)-yl]oxolan-2-yl}methyl 2-methylpropanoate
CAS:2492423-29-5 2349386-89-4
Molnupiravir
MNP00

{(R)-3-Hydroxy-3-methyl-1-[(S)-3-phenyl-2-(pyrazine-2-carboxamido)propanamido]butyl}boronic acid
Bortezomib USP Impurity C Hydroxy Bortezomib (USP
BTZ53

{2-[(4-Carbamimidoyl-phenylamino)-methyl]-1-methyl-1H-benzoimidazole-5-carbonyl}-pyridin-2-yl-amine
CAS:1015167-33-5
Dabigatran Despropionyl Impurity
DBG34B

�-3-(Methylamino)-1-phenylpropan-1-ol
CAS:115290-81-8
Atomoxetine EP Impurity H (R)-Isomer
ATM58

1'-Methyl-5-((pyrrolidin-1-ylsulfonyl)methyl)spiro[indoline-3,3'-pyrrolidin]-2-ol
CAS:1309457-18-8
Almotriptan Spiro Impurity Spiroalmotriptan
AMT50

1,1',1''-(Methoxymethanetriyl)tribenzene
CAS:596-31-6
Zidovudine EP Impurity K Methyl Trityl Ether
ZDV011

1,1'-(1,3-PHENYLENE)DI-1H-1,2,4-TRIAZOLE
CAS:514222-44-7
Fluconazole EP Impurity C Fluconazole USP RC C
FLC03

1,1'-(Decane-1,10-diyl)bis(4-amino-2-methylquinolinium) dichloride
CAS:522-51-0
Dequalinium chloride
DQL00

1,1'-(Disulfanediyldiethylene)bis(2-cyano-3-methylguanidine)
CAS:74886-59-2
Cimetidine EP Impurity H Cimetidine Disulfane Im
CMT08

1,1'-(ETHANE-1,1-DIYL)-4,4'-(2-METHYLPROPYL)DIBENZENE
CAS:102120-87-6
Ibuprofen EP Impurity R Ibuprofen BP Impurity R
IBP18

1,1'-(Hexane-1,6-diyl)bis[5-(4-chlorophenyl)biguanide]
CAS:55-56-1
Chlorhexidine (Base)
CXH00B

1,1'-(HEXANE-1,6-DIYL)BIS[5-(4-CHLOROPHENYL)BIGUANIDE] DIACETATE
CAS:56-95-1
Chlorhexidine (Diacetate) Chlorhexidine Diacetate
CXA00A

1,1'-(Hexane-1,6-diyl)bis[5-(4-chlorophenyl)biguanide] digluconate
CAS:18472-51-0
Chlorhexidine digluconate
CXG00G

1,1'-(Hexane-1,6-diyl)bis[5-(4-chlorophenyl)biguanide] dihydrochloride
CAS:3697-42-5
Chlorhexidine (2HCl) Chlorhexidine Dihydrochlorid
CXH00H

1,1'-(Hydroxyphosphinothioylidene)bis-aziridine sodium salt
CAS:14056-57-6
Thiotepa Impurity 4 (Sodium) Thiotepa EP Impurity
THT54N

1,1'-(Propane-1,3-diyl)bis(1,3-dihydro-2H-benzo[d]imidazol-2-one)
CAS:39677-10-6
Domperidone RC 6
DPD66

1,1'-(Propane-1,3-diyl)bis(3,7-dimethyl-3,7-dihydro-1H-purine-2,6-dione)
CAS:74857-22-0
Pentoxifylline EP Impurity K Bisdionin C
PTX11

1,1'-[(1-Methylethyl)imino]bis[3-(1H-indol-4-yloxy)propan-2-ol]
CAS:130115-65-0
Pindolol EP Impurity C
PDL03

1,1'-[(1-Methylethyl)imino]bis[3-(naphthalen-1yloxy)propan-2-ol]
CAS:83314-78-7
Propranolol EP Impurity B
PPN02

1,1'-[(3,3',5,5'-tetramethylbiphenyl-4,4'-diyl)bisoxy]-dipropan-2-amine
CAS:2059988-38-2
Mexiletine EP Impurity C (Base) Mexiletine Dimer
MLT03B

1,1'-[(3,3',5,5'-tetramethylbiphenyl-4,4'-diyl)bisoxy]-dipropan-2-amine dihydrochloride
CAS:2059988-39-3
Mexiletine EP Impurity C (2HCl) Mexiletine Dimer
MLT03H

1,1'-[(Disulfane-1,2-diyl)bis(ethylene)]bis[(4RS)-4-phenylimidazolidin-2-one]
CAS:32190-36-6
Levamisole EP Impurity E
LVM05

1,1'-[[(1,1-Dimethylethyl)imino]bis[(2-hydroxypropane-1,3-diyl)oxy(3-acetyl-1,4-phenylene)]]bis(3,3-diethylurea)
Celiprolol EP Impurity E
CLL05

1,1'-[[[[(4-Chlorophenyl)carbamimidoyl]imino]methylene]bis[imino(hexane-1,6-diyl)]]bis[5-(4-chlorophenyl)biguanide]
Chlorhexidine Digluconate EP Impurity D Chlorhexi
CXG04

1,1'-[[[[(4-Chlorophenyl)carbamimidoyl]imino]methylene]bis[imino(hexane-1,6-diyl)]]bis[5-(4-chlorophenyl)biguanide]
Chlorhexidine Dihydrochloride Impurity D Chlorhex
CXH04

1,1'-[1,2,5-Thiadiazol-3,4-diylbis(oxy)]bis[3-[(1,1-dimethylethyl)amino]propan-2-ol
Timolol EP Impurity J Timolol BP Impurity J
TML10B

1,1'-[2-Hydroxypropane-1,3-diylbis(oxy-2,1-phenylene)]bis(3-phenylpropan-1-one)
CAS:1329643-40-4
Propafenone EP Impurity F
PRP06

1,1'-[3a,17�-Bis(acetyloxy)-5a-androstane-2�,16�-diyl]bis(1-methylpiperidinium)
CAS:50587-95-6
Vecuronium EP Impurity B Vecuronium USP RC B 17-
VCR02

1,1'-[4,4'-Bis(Methoxy)biphenyl-3,3'-diyl]bis(tricyclo[3.3.1.13,7]decane)
CAS:932033-57-3
Adapalene EP Impurity D Adapalene USP RC D
ADP04

1,1'-[Disulfanediylbis(methylene-(2R,5S)-1,3-oxathiolane-2,5-diyl)]bis(4-amino-5-fluoropyrimidin-2(1H)-one)
CAS:2331211-44-8
Emtricitabine IP Impurity I Emtricitabine Disulfi
EMT59

1,1'-[Hexane-1,6-diylbis(iminocarbonimidoyl)]bis[3-(4-chlorophenyl)urea]
CAS:62247-48-7
Chlorhexidine Digluconate EP Impurity C Chlorhexi
CXG03

1,1'-[Hexane-1,6-diylbis(iminocarbonimidoyl)]bis[3-(4-chlorophenyl)urea]
CAS:62247-48-7
Chlorhexidine Dihydrochloride Impurity C Chlorhex
CXH03

1,1'-[Iminobis(carbonimidoyliminohexane-6,1-diyl)]bis[5(4-chlorophenyl)biguanide]
Chlorhexidine Digluconate EP Impurity H
CXG08

1,1'-[Methylenebis[sulfanediyl[(2S)-2-methyl-1-oxopropane-3,1-diyl]]]bis[(2S)-pyrrolidine-2-carboxylic]acid
Captopril EP Impurity L Captopril Methylenebis Im
CPR12

1,1'-[Propane-2,2-diylbis[sulfanediyl[(2S)-2-methyl-1-oxopropane-3,1-diyl]]]bis[(2S)-pyrrolidine-2-carboxylic]acid
Captopril EP Impurity O
CPR15

1,1'-[PROPYLIMINOBIS[(2-HYDROXYPROPANE-3,1-DIYL)OXY-2,1-PHENYLENE]]BIS(3-PHENYLPROPAN-1-ONE)
CAS:1346603-80-2
Propafenone EP Impurity G Propafenone Dimer Impur
PRP07

1,1'-Ethane-1,2-diylbis[3-(5-chloro-2,1,3-benzothiadiazol-4-yl)guanidine]
CAS:1147548-83-1
Tizanidine EP Impurity C
TZN03

1,1'-methylenebis(3,7-dimethyl-3,7-dihydro-1H-purine-2,6-dione)
CAS:77196-87-3
Pentoxifylline EP Impurity E
PTX05

1,1'-N-[METHYLENEBIS(SULFANEDIYLETHYLENE)]BIS(N'-METHYL-2-NITROETHENE-1,1-DIAMINE)
CAS:1331637-48-9
Ranitidine EP Impurity J
RNT10

1,1'-Oxybis[3-(2-methoxyphenoxy)propan-2-ol]
CAS:1797132-23-0
Guaifenesin EP Impurity C
GFS03

1,1'-OXYDIBENZENE
CAS:101-84-8
Nalidixic Acid EP Impurity D Propofol EP Impurity
NDX04

1,1,1,3,3,3-HEXAFLUORO-2-(FLUOROMETHOXY)PROPANE
CAS:28523-86-6
Sevoflurane
SVF00

1,1,1,3,3,3-HEXAFLUORO-2-METHOXYPROPANE
CAS:13171-18-1
Sevoflurane EP Impurity B Sevoflurane USP RC B
SVF02

1,1,1,3,3,3-HEXAFLUOROPROPAN-2-OL
CAS:920-66-1
Sevoflurane EP Impurity C Sevoflurane USP RC C
SVF03

1,1,1-Trifluoro-4-methoxy-4-p-tolylbut-3-en-2-one
CAS:187812-31-3
Celecoxib Impurity 7
CLC57

1,1,3,3,3-PENTAFLUORO-2-(FLUOROMETHOXY)PROP-1-ENE
CAS:58109-34-5
Sevoflurane EP Impurity A Sevoflurane USP RC A
SVF01

1,1-[(1-Methylethyl)imino]bis[3-[4-(2-methoxyethyl)phenoxy] propan-2-ol]
CAS:154784-36-8
Metoprolol EP Impurity O Metoprolol USP RC D
MTP15

1,1-bis(4-Fluorobenzyl)-3-(4-isobutoxybenzyl)urea
Pimavanserin RC 6
PVN66

1,1-BIS(METHYLTHIO)-2-NITROETHENE
CAS:13623-94-4
Ranitidine RC 2
RNT62

1,1-Bis{2-chloro-[4-(3-{1,2,4-triazolo[4,3-a]pyridin-3-(2H)-on-2-yl}propyl)piperazine-1-yl]phenyl}ethane
Trazodone Dimer Trazodone-3,3'-Dimer
TZD52B

1,1-CYCLOHEXANE DIACETIC ACID
CAS:11/7/4355
Gabapentin Diacetic Acid Impurity
GBP32

1,1-CYCLOHEXANE DIACETIC ACID MONOAMIDE
CAS:99189-60-3
Gabapentin Diacetic Acid Monoamide
GBP33

1,1-Dibenzyl-4-[(5,6-dimethoxy-1-oxoindan-2-yl) methyl]piperidinium bromide
CAS:844694-85-5
Donepezil Benzyl Bromide Donepezil Quaternary Sal
DNP31

1,1-DIMETHYL-3-((1S,4S)-4-(2-OXOETHYL)CYCLOHEXYL)UREA
Cariprazine RC 1
CRR61

1,1-Dimethyl-3-(4-methyl-2-nitrophenyl)urea
CAS:1598564-05-6
Azapropazone RC 2
AZZ62

1,1-DIMETHYLBIGUANIDE
CAS:657-24-9
Metformin (Base)
MTF00B

1,1-Dimethylbiguanide dihydrochloride
CAS:1674364-49-8
Metformin (2HCl)
MTF00X

1,1-DIMETHYLBIGUANIDE HYDROCHLORIDE
CAS:1115-70-4
Metformin (HCl)
MTF00H

1,1-Dimethylethyl (1S,9S)-9-[[(S)-1-(ethoxycarbonyl)-3-phenylpropyl]amino]-10-oxooctahydro-6H-pyridazino[1,2-a][1,2]diazepine-1-carboxylate
CAS:106860-19-9
Cilazapril EP Impurity A
CZP01

1,1-Dimethylethyl (2RS)-2-(4-cyclohexyl-1-naphthyl)propanoate
Vedaprofen EP Impurity B
VPF02

1,1-Dimethylethyl (3R*,5S*,6E)-7-[3-(4-?uorophenyl)-1-(1-methylethyl)-1H-indol-2-yl]-3,5-dihydroxyhept-6-enoate
CAS:129332-29-2
Fluvastatin USP RC B Fluvastatin t-Butyl Ester
FLV22

1,1-Dimethylethyl (3R,5S,6E)-7-[3-(4-?uorophenyl)-1-(1-methylethyl)-1H-indol-2-yl]-3,5-dihydroxyhept-6-enoate
CAS:194934-96-8
Fluvastatin EP Impurity B Fluvastatin BP Impurity
FLV02

1,1-DIMETHYLETHYL [(3S)-3-AMINO-2-OXO-2,3,4,5-TETRAHYDRO-1H-1-BENZAZEPIN-1-YL]ACETATE
CAS:109010-60-8
Benazepril EP Impurity F Benazepril USP RC F
BNZ06

1,1-Dimethylethyl [[[1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetyl]oxy]acetate
CAS:75302-98-6
Acemetacin EP Impurity E Acemetacin t-Butyl Ester
ACM05

1,1-Dimethylethyl 4'-[[4-methyl-6-(1-methyl-1H-benzimidazol-2-yl)-2-propyl-1H-benzimidazol-1-yl]methyl]biphenyl-2-carboxylate
CAS:144702-26-1
Telmisartan EP Impurity C Telmisartan t-Butyl Est
TST03

1,1`-[(1-Methylethyl)imino]bis[3-[2-(prop-2-enyl)phenoxy]propan-2-ol]
Alprenolol EP Impurity D
APL04

1,1�-(DITHIOBIS(2-HYDROXY-3-PROPYL-4,1-PHENYLENE))BISETHANONE
Tipelukast RC 9
TLK69

1,1�-[1,4-Phenylenebis(methylene)]bis-1,4,8,11-tetraazacyclotetradecane
CAS:110078-46-1
Plerixafor
PXF00

1,11-Bis(4-((1,4,8,11-Tetraazacyclotetradecan-1-yl)methyl)benzyl)-1,4,8,11-tetraazacyclo tetradecane
CAS:771464-86-9
Plerixafor Impurity 3
PXF63

1,11-Dichloro-12,13-dihydro-12-(4-O-methyl-�-D-glucopyranosyl)-5H-indolo[2,3-a]pyrrolo[3,4-c]carbazole-5,7(6H)-dione
CAS:93908-02-2
Rebeccamycin
RBC00

1,2,3,4,10,14B-HEXAHYDRO-2-METHYLPYRAZINO[2,1-A]PYRIDO[2,3-C][2]-BENZAZEPINE
CAS:85650-52-8
Mirtazapine
MTZ00

1,2,3,4,10,14B-HEXAHYDRO-2-METHYLPYRAZINO[2,1-A]PYRIDO[2,3-C][2]BENZAZEPIN-8-OL
CAS:102335-57-9
Mirtazapine 8-Hydroxy
MTZ50

1,2,3,4,10,14b-Hexahydro-2-methylpyrazino[2,1-a]pyrido[2,3-c][2]benzazepin-8-yl �-D-glucopyranosiduronic acid
CAS:155239-47-7
Mirtazapine 8-Hydroxy �-D-Glucuronide
MTZ51

1,2,3,4,10,14B-HEXAHYDRO-2-METHYLPYRAZINO[2,1-A]PYRIDO[2,3-C][2]BENZAZEPINE 2-OXIDE
CAS:155172-12-6
Mirtazapine EP Impurity A Mirtazapine USP RC B M
MTZ01

1,2,3,4,10,14b-Hexahydropyrazino[2,1-a]pyrido[2,3-c][2]benzazepine
CAS:61337-68-6
Mirtazapine EP Impurity D (Base) Mirtazapine USP
MTZ04B

1,2,3,4,10,14B-HEXAHYDROPYRAZINO[2,1-A]PYRIDO[2,3-C][2]BENZAZEPINE HCL
CAS:1188265-41-9
Mirtazapine EP Impurity D (HCl) Mirtazapine USP R
MTZ04H

1,2,3,4-Tetrahydro-4,6-dihydroxy-2-methylisoquinoline
CAS:23824-24-0
Phenylephrine Impurity 2 (Base)
PNP61B

1,2,3,4-TETRAHYDRO-4,6-DIHYDROXY-2-METHYLISOQUINOLINE HYDROCHLORIDE
CAS:57196-61-9
Phenylephrine Impurity 2 (HCl)
PNP61H

1,2,3,4-TETRAHYDROISOQUINOLINE-3-CARBOXYLIC ACID
CAS:67123-97-1
Quinapril RC 1 (Base)
QPR61B

1,2,3,4-TETRAHYDROISOQUINOLINE-3-CARBOXYLIC ACID HYDROCHLORIDE
CAS:41994-51-8
Quinapril RC 1 (HCl)
QPR61H

1,2,3,4-Tetramethyl-1H-indol-5-ol
Arbidol Impurity D
ADX54

1,2,3,6,7,11b-Hexahydro-2-[(cis-4-hydroxycyclohexyl)carbonyl]-4H-pyrazino[2,1-a]isoquinolin-4-one cis-(+/-)-1,2,3,6,7,11b-Hexahydro-2-[(4-hydroxycyclohexyl)carbonyl]- 4H-pyrazino[2,1-a]isoquinolin-4-one
CAS:134924-68-8
Praziquantel cis-Hydroxy Impurity
PQT51

1,2,3,6,7,11B-HEXAHYDRO-4H-PYRAZINO[2,1-A]ISOQUINOLIN-4-ONE
CAS:61196-37-0
Praziquantel Descyclohexylcarbonyl Impurity Prazi
PQT50

1,2,3,6-TETRAHYDRO-1,3-DIMETHYL-2,6-DIOXO-7H-PURINE-7-ACETIC ACID
CAS:652-37-9
Acephylline Theophylline-7-Acetic Acid
ABP09

1,2,3,9-TETRAHYDRO-9-METHYL-3-[(2-METHYL-1H-IMIDAZOL-1-YL)METHYL]-4H-CARBAZOL-4-ONE
CAS:99614-02-5
Ondansetron (Base)
ODS00B

1,2,3,9-Tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-4H-carbazol-4-one hydochloride
CAS:99614-01-4
Ondansetron (HCl Anhydrous)
ODS00A

1,2,3,9-Tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-4H-carbazol-4-one hydochloride dihydrate
CAS:103639-04-9
Ondansetron (HCl Dihydrate)
ODS00H

1,2,4-BENZENETRIOL
CAS:533-73-3
Phloroglucinol EP Impurity E
PLG05

1,2,4-TRIAZOL-3-AMINE
CAS:61-82-5
Trapidil EP Impurity B Amitrole
TRL02

1,2-Benzisoxazole-3-methanecarboxylic acid 1,2-Benzisoxazole-3-acetic acid
CAS:4865-84-3
Zonisamide Carboxylic Acid Impurity
ZNS31

1,2-BENZISOXAZOLE-3-METHANESULFONIC ACID
CAS:342623-49-8
Zonisamide USP RC A (Acid) Zonisamide Sulfonic Ac
ZNS21A

1,2-BENZISOXAZOLE-3-METHANESULFONIC ACID SODIUM SALT
CAS:73101-64-1
Zonisamide USP RC A (Sodium Salt) Zonisamide Sulf
ZNS21N

1,2-BENZISOXAZOLE-3-METHANESULFONYLCHLORIDE
CAS:73101-65-2
Zonisamide Sulfonyl Chloride Impurity
ZNS33

1,2-BIS((5-NITROFURAN-2-YL)METHYLENE)HYDRAZINE
CAS:736-53-8
Nifuratel Impurity F Nifuroxazide EP Impurity D
NFT66

1,2-bis({6-[4-(tert-Butyl)phenylsulfonamido]-5-(2-methoxyphenoxy)-[2,2'-bipyrimidin]-4-yl}oxy)ethane
CAS:1097263-60-9
Bosentan USP RC C
BSN23

1,2-Bis(2,3-Dihydro-1H-inden-1-yl)-1,2-di(prop-2-yn-1-yl)hydrazine
Rasagiline Dimer
RSG50

1,2-BIS(2,4-DIMETHYLPHENYL)DISULFANE
CAS:13616-83-6
Vortioxetine Impurity 18
VXT68

1,2-BIS(2-NITROPHENYL)ETHANE
CAS:16968-19-7
Carbamazepine Impurity 14
CBM74

1,2-bis(Dimethylamino)ethane N1,N1,N2,N2-Tetramethylethane-1,2-diamine
CAS:110-18-9
Clavulanate Potassium EP Impurity J (Base)
CVL10B

1,2-bis(Dimethylamino)ethane N1,N1,N2,N2-Tetramethylethane-1,2-diamine dihydrochloride
CAS:7677-21-6
Clavulanate Potassium EP Impurity J (2HCl)
CVL10H

1,2-bis[2-(4-Dibenzo [b,f] [1,4]thiazepin-11-yl-1piperazinyl)ethoxy]ethane
CAS:1371638-05-9
Quetiapine EP Impurity E (Base) Quetiapine bis-Et
QTP05B

1,2-bis[2-(4-Dibenzo [b,f] [1,4]thiazepin-11-yl-1piperazinyl)ethoxy]ethane dihydrochloride
Quetiapine EP Impurity E (2HCl) Quetiapine bis-Et
QTP05H

1,2-DIFLUORO-4-NITROBENZENE
CAS:369-34-6
Linezolid RC 2
LNZ62

1,2-Dihydro-5,6,9,17,19,21-hexahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,11-dioxo-2,7-(epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-8-carboxaldehyde 21-acetate
CAS:13292-22-3
Rifamycin 3-Formyl 3-Formylrifampicin SV
RMC53

1,2-DIMETHOXY-4-NITROBENZENE
CAS:709-09-1
Bosutinib Impurity 12
BST72

1,2-DIMETHOXYBENZENE
CAS:91-16-7
Guaiacol EP Impurity C Veratrole
GCL03

1,2-DIMETHYL-1,4,5,6-TETRAHYDROPYRIMIDINE
CAS:4271-96-9
Pyrantel EP Impurity D
PTL04

1,2-Dimethyl-4-(methylimino)-1,4-dihydropyridin-3-ol
CAS:2734417-02-6
Deferiprone EP Impurity C
DFX03

1,2-DIPHENYL-4-[2-(PHENYLSULFANYL)ETHYL]PYRAZOLIDINE-3,5-DIONE
CAS:3736-92-3
Sulfinpyrazone EP Impurity B
SFP02

1,2-DIPHENYL-4-[2-(PHENYLSULFINYL)ETHYL]PYRAZOLIDINE-3,5-DIONE
CAS:57-96-5
Sulfinpyrazone
SFP00

1,2-DIPHENYL-4-[2-(PHENYLSULFONYL)ETHYL]PYRAZOLIDINE-3,5-DIONE
CAS:1106-50-9
Sulfinpyrazone EP Impurity A
SFP01

1,2-DIPHENYLDIAZENE
CAS:103-33-3
Phenylbutazone EP Impurity D Azobenzene
PHB04

1,2-DIPHENYLHYDRAZINE
CAS:122-66-7
Phenylbutazone EP Impurity C
PHB03

1,2a,3,4-Tetrahydro-2H-cyclopenta(cd)indol-2-one
Ropinirole RC 3
RPN63

1,2a,4,7�-Dihydroxy-9-oxotax-11-ene-5�,10�,13a,20-tetrayl 5,10-diacetate 20-benzoate 13-[(2R,3S)-3-(benzoylamino)-2-hydroxy-3-phenylpropanoate]
CAS:932042-85-8
Paclitaxel EP Impurity M Paclitaxel Oxetane Ring-
PCX13

1,3,4,6-Tetra-O-sulfo-�-D-fructofuranosyl a-D-glucopyranoside 2,3,4-tris(hydrogen sulfate) heptapotassium salt
CAS:386229-69-2
Sucrose heptasulfate potassium salt
SCR50K

1,3,5(10)-ESTRATRIEN-3-OL-17-ONE
CAS:53-16-7
Estrone (+)-Estrone Estradiol EP Impurity A Est
ETN00

1,3,5-Benzenetriol Hydrate (12)
CAS:6099-90-7
Phloroglucinol (Dihydrat)e
PLG50

1,3,5-TRIAZINE-2,4,6-TRIAMINE
CAS:108-78-1
Metformin EP Impurity D Melamine
MTF04B

1,3,5-TRIMETHOXYBENZENE
CAS:621-23-8
Phloroglucinol trimethyl ether
PLG63

1,3,5-TRIS(BENZYLOXY)BENZENE
CAS:59434-20-7
Phloroglucinol Tribenzyl Ether
PLG61

1,3,5-TRIS(OXIRAN-2-YLMETHYL)-1,3,5-TRIAZINANE-2,4,6-TRIONE
CAS:2451-62-9
Metaxalone RC 6
MXL66

1,3,7-TRIMETHYL-3,7-DIHYDRO-1H-PURINE-2,6-DIONE
CAS:58-08-2
Theophylline EP Impurity A Dimenhydrinate EP Impu
TPL01

1,3,7-TRIMETHYL-3,7-DIHYDRO-1H-PURINE-2,6-DIONE
CAS:58-08-2
Dimenhydrinate EP Impurity C Pentoxifylline EP Im
DMH03

1,3,8-TRIHYDROXY-6-METHYLANTHRACENE-9,10-DIONE
CAS:518-82-1
Diacerein EP Impurity A Emodin
DAR01

1,3,8-TRIHYDROXY-6-METHYLANTHRACENE-9,10-DIONE
CAS:518-82-1
Emodin Diacerein EP Impurity A
EMX00

1,3,8-Trihydroxy-6-methylanthraquinone triacetate
CAS:6030-60-0
Emodin Triacetate
EMX53

1,3-ADAMANTANEDIOL
CAS:5001-18-3
Vildagliptin Impurity 2
VDG62

1,3-BENZENEDIOL
CAS:108-46-3
Phloroglucinol EP Impurity B Hymecromone EP Impur
PLG02

1,3-bis(((S)-2-Oxo-3-(4-(3-oxomorpholino)phenyl)oxazolidin-5-yl)methyl) urea
CAS:1365267-35-1
Rivaroxaban EP Impurity D Rivaroxaban USP RC D R
RVR04

1,3-BIS((1R,4R)-4-(2-(4-(2,3-DICHLOROPHENYL)PIPERAZIN-1-YL)ETHYL)CYCLOHEXYL)UREA
Cariprazine RC 2
CRR62

1,3-BIS(2,5-DIMETHYLPHENOXY)PROPANE
CAS:415724-02-6
Gemfibrozil EP Impurity H
GFZ08

1,3-BIS(2,6-DIMETHYLPHENYL)THIOUREA
CAS:25480-78-8
Xylazine EP Impurity B
XLZ02

1,3-Bis(2-(7-methoxynaphthalen-1-yl)ethyl)urea
CAS:185421-27-6
Agomelatine Impurity 4 Agomelatine Dimer Urea
AGM64

1,3-Bis(2-acetyl-3-hydroxyphenoxy) propan-2-ol
CAS:16150-44-0
Cromolyn USP RC A
CMY21

1,3-BIS(2-CHLOROETHYL)-1-NITROSOUREA
CAS:154-93-8
Carmustine
CMS00

1,3-BIS(2-CHLOROETHYL)UREA
CAS:2214-72-4
Carmustine EP Impurity A Carmustine USP RC A Lom
CMS01

1,3-Bis(2-Ethylhexyl)]-5-methylhexahydropyrimidin-5-amine
CAS:141-94-6
Hexetidine
HXT00

1,3-Bis(2-fluoro-4-(2-(methylcarbamoyl)pyridin-4-yloxy)phenyl)urea
CAS:2438857-80-6
Regorafenib EP Impurity D
RGA04

1,3-BIS(2-METHOXYPHENOXY)PROPAN-2-OL
CAS:16929-60-5
Ranolazine Impurity E Dianisylglycerole Guaifene
RLZ51

1,3-BIS(2-METHOXYPHENOXY)PROPAN-2-OL
CAS:16929-60-5
Guaifenesin EP Impurity D Ranolazine Impurity E
GFS04

1,3-bis(3-(3,5-Dimethylphenoxy)-2-hydroxypropyl)-5-(oxiran-2-ylmethyl)-1,3,5-triazinane-2,4,6-trione
CAS:1392430-17-9
Metaxalone RC 1
MXL61

1,3-BIS(4-(3-OXOMORPHOLINO)PHENYL)UREA
CAS:1855920-51-2
Rivaroxaban Impurity 8
RVR68

1,3-BIS(4-CHLORO-3-(TRIFLUOROMETHYL)PHENYL)UREA
CAS:370-50-3
Sorafenib RC 2
SRF62

1,3-BIS(4-CYANO-3-(TRIFLUOROMETHYL)PHENYL)THIOUREA
CAS:1839619-50-9
Enzalutamide Impurity 7
EZL67

1,3-BIS(4-CYANO-3-(TRIFLUOROMETHYL)PHENYL)UREA
CAS:1895865-11-8
Enzalutamide Impurity 6
EZL66

1,3-BIS(4-ISOBUTOXYBENZYL)UREA
CAS:955997-87-2
Pimavanserin RC 16
PVN76

1,3-BIS(4-NITRO-3-(TRIFLUOROMETHYL)PHENYL)UREA
Nilutamide EP Impuirty D
NLD04

1,3-Bis(5-chloro-2,1,3-benzothiadiazol-4-yl)-1-(4,5-dihydro-1H-imidazol-2-yl)guanidine
CAS:1147548-85-3
Tizanidine EP Impurity F
TZN06

1,3-Bis(9H-carbazol-4-yloxy)-2-propanol
CAS:1276477-91-8
Carvedilol Biscarbazole Impurity Carvedilol Dieth
CVD41

1,3-BIS(BROMOMETHYL)-5-METHYLBENZENE
CAS:19294-04-3
Anastrozole 1,3-Dibromomethyl Impurity
ANS41

1,3-Bis(cyanomethyl)-5-methylbenzene
CAS:120511-74-2
Anastrozole 1,3-Dicyanomethyl Impurity
ANS42

1,3-Bis(dimethylaminomethyl)-2-methylpropane)
CAS:67952-96-9
Oxomemazine Diamine Impurity
OXM51

1,3-BIS(NAPHTHALEN-1-YLOXY)PROPAN-2-OL
CAS:17216-10-3
Propranolol EP Impurity C
PPN03

1,3-BIS-[4-(3-CHLOROPHENYL)PIPERAZIN-1-YL]PROPANE
CAS:9/7/6323
Trazodone BP Impurity H (Base) Trazodone EP Impur
TZD08B

1,3-Bis-[4-(3-chlorophenyl)piperazin-1-yl]propane Dihydrochloride
CAS:2408971-27-5
Trazodone BP Impurity H (2HCl) Trazodone EP Impur
TZD08H

1,3-Bis[(1-methylethyl)amino]propan-2-ol Dihydrochloride
CAS:73313-36-7
Metoprolol EP Impurity M (2HCl)
MTP13H

1,3-BIS[(BIPHENYL-4-YL)PHENYLMETHYL]-1H-IMIDAZOLIUM CHLORIDE
CAS:66600-13-3
Bifonazole EP Impurity D
BFN04

1,3-Bis[3-[4-(5-chloro-2-oxo-2,3-dihydro-1H-benzimidazol-1-yl)piperidin-1-yl]propyl]-1,3-dihydro-2H-benzimidazol-2-one
CAS:1391053-55-6
Domperidone EP Impurity F
DPD06

1,3-Bis[3-acetyl-4-[3-[(1,1-dimethylethyl)amino]-2-hydroxypropoxy]phenyl]urea
CAS:125579-40-0
Celiprolol EP Impurity B Celiprolol Aniline Carbo
CLL02

1,3-BIS[4-(2-METHOXYETHYL)PHENOXY]PROPAN-2-OL
CAS:230975-30-1
Metoprolol Dimer Metoprolol Bis Propanol Impurity
MTP56

1,3-DI(PIPERIDIN-1-YL)PROPAN-2-OL
CAS:13429-29-3
Etoricoxib Impurity 6
ECX66

1,3-Diacetyl-2,4,6-trihydroxybenzene
CAS:2161-86-6
Phloroglucinol 2,4-Diacetyl
PLG52

1,3-DIBENZYLUREA
CAS:1466-67-7
Lacosamide Impurity 2
LSM62

1,3-Dibromo adamantamine
CAS:1797133-04-0
Memantine Dedimethyl Dibromo
MMT52

1,3-DIBROMO-2-(METHOXYMETHOXY)BENZENE
CAS:142273-81-2
Sulfasalazine RC 4
SSZ54

1,3-DICHLORO-2-(CHLOROMETHYL)BENZENE
CAS:2014-83-7
Isoconazole Impurity 2
ISZ52

1,3-DICHLORO-2-(DICHLOROMETHYL)BENZENE
CAS:81-19-6
Isoconazole Impurity 5
ISZ55

1,3-DICHLORO-2-METHYLBENZENE
CAS:118-69-4
Isoconazole Impurity 1
ISZ51

1,3-DICHLORO-5,5-DIMETHYLIMIDAZOLIDINE-2,4-DIONE
CAS:118-52-5
Hydantoin 1,3-Dichloro 5,5-Dimethyl
HDT55

1,3-DIDEOXY-1,3-BIS(METHYLAMINO)-MYO-INOSITOL
CAS:6216-38-2
Spectinomycin EP Impurity A (Base) Actinamine
SMC01B

1,3-Dideoxy-1,3-bis(methylamino)-myo-inositol dihydrochloride
CAS:52049-70-4
Spectinomycin EP Impurity A (2HCl) Actinamine Dih
SMC01H

1,3-DIHYDRO-2H-INDOL-2-ONE
CAS:59-48-3
Diclofenac EP Impurity E Diclofenac USP RC E
DCF05

1,3-Dihydro-4-[2-[(2-methylpentyl)amino]ethyl]-2H-Indol-2-one
CAS:249622-60-4
Ropinirole EP Impurity B
RPN02

1,3-DIIODO-5,5-DIMETHYLIMIDAZOLIDINE-2,4-DIONE
CAS:12/4/2232
Hydantoin 1,3-Diiodo 5,5-Dimethyl
HDT56

1,3-DIISOPROPYLTHIOUREA
CAS:2986-17-6
Cefathiamidine RC 5
CHM65

1,3-DIISOPROPYLUREA
CAS:4128-37-4
Bosutinib Impurity 23
BST83

1,3-DIMETHOXY-5-PENTYLBENZENE
CAS:22976-40-5
Olivetol dimethyl ether
OVT54

1,3-DIMETHYL-1H-PYRAZOLE-4-SULFONAMIDE
CAS:88398-53-2
Elexacaftor RC 10
ELX60

1,3-DIMETHYL-3,7-DIHYDRO-1H-PURINE-2,6-DIONE
CAS:58-55-9
Theophylline Dimenhydrinate EP Impurity A
TPL00

1,3-DIMETHYL-3,7-DIHYDRO-1H-PURINE-2,6-DIONE
CAS:58-55-9
Diprophylline EP Impurity B Dimenhydrinate EP Imp
DPP02

1,3-DIMETHYL-3,7-DIHYDRO-1H-PURINE-2,6-DIONE
CAS:58-55-9
Dimenhydrinate EP Impurity A Pentoxifylline EP Im
DMH01

1,3-Dimethyl-7,9-dihydro-1H-purine-2,6,8(3H)-trione
CAS:944-73-0
Theophylline EP Impurity E
TPL05

1,3-DIMETHYLADAMANTANE
CAS:702-79-4
Memantine USP RC A Desamino Memantine
MMT21

1,3-DIPHENYLPROPAN-1-OL
CAS:14097-24-6
Dapoxetine RC 14
DXE74

1,3-Diphenylpropan-1-one 3-?Phenylpropiophenone
CAS:1083-30-3
Dapoxetine RC 13
DXE73

1,4,8,11-TETRAAZACYCLOTETRADECANE
CAS:295-37-4
Plerixafor 1,4,8,11-Tetraazacyclotetradecane
PXF55

1,4-BENZODIOXAN-2-CARBOXYLIC ACID
CAS:3663-80-7
Doxazosin EP Impurity A Doxazosin USP RC D
DXZ01

1,4-BIS((4-CHLOROPHENYL)(PHENYL)METHYL)PIPERAZINE
CAS:346451-15-8
Meclizine EP Impurity F (Base) Meclozine EP Impur
MCL06B

1,4-BIS((4-CHLOROPHENYL)(PHENYL)METHYL)PIPERAZINE DIHYDROCHLORIDE
CAS:856841-95-7
Meclizine EP Impurity F (2HCl) Meclozine EP Impur
MCL06H

1,4-BIS(2,3,4-TRIMETHOXYBENZYL)PIPERAZINE
CAS:1257-19-8
Trimetazidine EP Impurity B Hexametazidine
TMD02B

1,4-bis(2-Ethylhexyloxy)-1,4-dioxobutane-2-sulfonic acid
CAS:10041-19-7
Docusate (Acid)
DCS00A

1,4-BIS(2-HYDROXYETHYL)PIPERAZINE
CAS:122-96-3
Perphenazine Impurity 4
PPZ74

1,4-BIS(3-CHLOROPHENYL)PIPERAZINE
CAS:79975-63-6
Trazodone Impurity 1 Trazodone USP Impurity I
TZD61

1,4-BIS(3-METHYLBENZYL)PIPERAZINE
CAS:625406-13-5
Meclizine bis-Methylbenzyl Impurity (Base)
MCL32B

1,4-Bis(3-methylbenzyl)piperazine HCl
CAS:5321-65-3
Meclizine bis-Methylbenzyl Impurity (HCl)
MCL32H

1,4-bis(9-(4-Chlorobenzylidene)-2,7-dichloro-9H-fluoren-4-yl)-3,6-dioxa-bicyclo[3.1.0]hexane
CAS:1795129-61-1
Lumefantrine Impurity B
LFN52

1,4-BIS(BENZO[D]ISOTHIAZOL-3-YL)PIPERAZINE
CAS:223586-82-1
Ziprasidone EP Impurity P Lurasidone Impurity 1
ZPS16B

1,4-BIS(BENZO[D]ISOTHIAZOL-3-YL)PIPERAZINE
CAS:223586-82-1
Lurasidone Impurity 1 Lurasidone DBI Piperazine I
LRS61

1,4-BIS(BROMOMETHYL)BENZENE
CAS:623-24-5
Plerixafor 1,4-bis(Bromomethyl)benzene
PXF54

1,4-bis(Dibenzo[b,f][1,4]thiazepine-11-yl)piperazine 11,11'-(1,4-Piperazine diyl)-bis-dibenzo[b,f][1,4]thiazepine
CAS:945668-94-0
Quetiapine EP Impurity D Quetiapine Bis(dibenzoth
QTP04

1,4-BIS(DIPHENYLMETHYL)PIPERAZINE
CAS:216581-01-0
Cinnarizine EP Impurity E
CNR05

1,4-BIS(FURAN-2-YLCARBONYL)PIPERAZINE
CAS:31350-27-3
Terazosin EP Impurity M Prazosin EP Impurity B
TRZ13

1,4-Bis(furan-2-ylcarbonyl)piperazine 1,4-Di(2-furoyl)piperazine
CAS:31350-27-3
Prazosin EP Impurity B Terazosin EP Impurity M
PRZ02

1,4-bis-[4-[4-Methyl-3-[[4-(pyridin-3-yl)pyrimidin-2- yl]amino]phenyl] carbamoyl] benzyl piperazine
CAS:1365802-18-1
Imatinib Dimer Impurity Imatinib bis Impurity Im
IMT75

1,4-bis[(3,4-Dihydro-2(1H)-quinolinone-7-yl)oxy]-butane
CAS:882880-12-8
Aripiprazole Diquinoline Butanediol Impurity (USP)
ARP45

1,4-Bis[(4-chlorophenyl)phenylmethyl]piperazine
CAS:346451-15-8
Cetirizine EP Impurity D (Base) Cetirizine Dimer
CTR04B

1,4-BIS[(4-CHLOROPHENYL)PHENYLMETHYL]PIPERAZINE DIHYDROCHLORIDE
CAS:856841-95-7
Cetirizine EP Impurity D (2HCl) Meclizine EP Impu
CTR04H

1,4-Bis[(biphenyl-4-yl)phenylmethyl]-1H-imidazole
Bifonazole EP Impurity E
BFN05

1,4-BIS[(TETRAHYDROFURAN-2-YL)CARBONYL]PIPERAZINE
CAS:547730-06-3
Terazosin EP Impurity O
TRZ15

1,4-DI(BENZO[B]THIOPHEN-4-YL)PIPERAZINE
CAS:1420987-86-5
Brexpiprazole Impurity 7
BRX67

1,4-DICHLOROBUTANE
CAS:110-56-5
Brexpiprazole Impurity 13
BRX73

1,4-Dideoxy-1,4-dihydro-3-[(E)-[(4-methyl-1-piperazinyl)imino]methyl]-1,4-dioxo-rifamycin
CAS:13983-13-6
Rifampicin EP Impurity A Rifampicin Quinone
RFP01

1,4-DIHYDRO-1-(5-METHOXY-1H-BENZIMIDAZOL-2-YL)-3,5-DIMETHYL-4-OXO-2-PYRIDINECARBOXYLIC ACID AMMONIUM SALT
CAS:2227107-89-1
Omeprazole Pyridone Acid (Ammonium Salt) Esomepra
OMP40M

1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic acid 2-acetoxy-2-methyl-propyl methyl ester
CAS:106666-00-6
Nisoldipine Acetoxy Impurity
NSD51

1,4-Dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic acid methyl 2-methylpropyl ester
CAS:63675-72-9
Nisoldipine
NSD00

1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl) pyridine-3,5-dicarboxylic acid 2-[N-(3,3-diphenylpropyl)-N-methylamino]-1,1-dimethylethyl propyl diester
CAS:1797124-83-4
Lercanidipine Impurity C Lercanidipine 5-Desmethy
LCN03

1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid 1-methylpropyl ester
CAS:74936-74-6
Lercanidipine Impurity A
LCN01

1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid 2-[(3,3-diphenylpropyl)methylamino]-1,1-dimethylethyl ester
CAS:1119226-97-9
Lercanidipine Impurity B Lercanidipine Acid
LCN02

1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid 2-[(3,3-diphenylpropyl)methylamino]-1,1-dimethylethyl methyl ester
CAS:100427-26-7
Lercanidipine (Base)
LCN00B

1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid 2-[(3,3-diphenylpropyl)methylamino]-1,1-dimethylethyl methyl ester hydrochloride
CAS:132866-11-6
Lercanidipine (HCl)
LCN00H

1,4-DIHYDRO-2,6-DIMETHYL-4-(3-NITROPHENYL)-3,5-PYRIDINEDICARBOXYLIC ACID 3,5-DIMETHYL ESTER
CAS:21881-77-6
Nicardipine USP RC C Nicardipine EP Impurity C N
NCD23

1,4-DIHYDRO-2,6-DIMETHYL-4-(3-NITROPHENYL)-3,5-PYRIDINEDICARBOXYLIC ACID 3-METHYL ESTER
CAS:74936-72-4
Nicardipine USP RC A Nicardipine Carboxylic Acid
NCD21

1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-Pyridinedicarboxylic acid bis[2-[methyl(phenylmethyl)amino]ethyl] ester
CAS:71791-90-7
Nicardipine EP Impurity B Nicardipine Bis Analog
NCD02B

1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-Pyridinedicarboxylic acid bis[2-[methyl(phenylmethyl)amino]ethyl] ester hydrochloride
Nicardipine EP Impurity B (HCl) Nicardipine Bis A
NCD02H

1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid methyl 2-[methyl(phenylmethyl)amino]ethyl ester HCl
CAS:54527-84-3
Nicardipine HCl
NCD00H

1,4-Dihydroxy-5,8-bis(2-(2-hydroxyethylamino)ethylamino)anthracene-9,10-dione
CAS:65271-80-9
Mitoxantrone (Base)
MXT00B

1,4-Dihydroxy-5,8-bis(2-(2-hydroxyethylamino)ethylamino)anthracene-9,10-dione dihydrochloride
CAS:70476-82-3
Mitoxantrone Dihydrochloride
MXT00H

1,4-DIHYDROXYBENZENE
CAS:123-31-9
Butylhydroxyanisole EP Impurity A Etamsylate EP I
BHA01

1,4-DIMETHYL-2-(4-PHENYLBUTOXY)BENZENE
CAS:500904-64-3
Gemfibrozil EP Impurity F
GFZ06

1,4-Dimethyl-2-(prop-2-enyloxy)benzene
CAS:3727-20-6
Gemfibrozil EP Impurity G
GFZ07

1,4-DIMETHYLPIPERAZINE
CAS:106-58-1
Diethylcarbamazine EP Impurity B
DCM02

1,4-DINITROSOPIPERAZINE
CAS:140-79-4
Dinitrosopiperazine
NSA57

1,43,6-Dianhydro-D-glucitol 2-nitrate
CAS:16106-20-0
Isosorbide Dinitrate EP Impurity B Isosorbide 2-N
ISD02

1,43,6-Dianhydro-D-glucitol 5-nitrate
CAS:16051-77-7
Isosorbide Dinitrate EP Impurity C Isosorbide 5-N
ISD03

1,5-BIS(1-METHYLETHYL)BIGUANIDE HYDROCHLORIDE
CAS:35708-82-8
Proguanil EP Impurity D Proguanil USP RC D
PGN04H

1,5-BIS(2-BROMO-5-HYDROXYPHENYL)PENTAN-3-ONE
CAS:1427054-10-1
Spinol RC 3
SPN03

1,5-BIS(3-HYDROXYPHENYL)PENTAN-3-ONE
CAS:1427054-08-7
Spinol RC 2
SPN02

1,5-BIS(4-CHLOROPHENYL)BIGUANIDE HYDROCHLORIDE
CAS:13590-98-2
Proguanil EP Impurity C Proguanil USP RC C
PGN03H

1,5-BIS(6-METHOXYNAPHTHALEN-2-YL)PENTAN-3-ONE
CAS:343272-53-7
Nabumetone EP Impurity E
NBM05

1,5-Dibromo-1-(2-fluorophenyl)pentan-2-one
CAS:1373350-57-2
Prasugrel Impurity 3 Prasugrel Dibromo Impurity
PRS73

1,5-DIHYDRO-4H-PYRAZOLO[3,4-D]PYRIMIDIN-4-ONE
CAS:315-30-0
Allopurinol
ALP00

1,5-Dimethyl-4-(dimethylamino)-2-phenyl-2,3-dihydro-1H-pyrazol-3-one
CAS:58-15-1
Metamizole EP Impurity D 4-Dimethylamino Antipyri
MMZ04

1,5-dimethyl-4-(methylamino)-2-phenyl-2,3-dihydro-1H-pyrazol-3-one
CAS:519-98-2
Metamizole EP Impurity C (Base) 4-Methylamino Ant
MMZ03B

1,5-Dimethyl-4-(methylamino)-2-phenyl-2,3-dihydro-1H-pyrazol-3-one HCl
CAS:856307-27-2
Metamizole EP Impurity C (HCl) 4-Methylamino Anti
MMZ03H

1,6-Dihydro-5-hydroxy-1-methyl-2-[1-methyl-1-[[(5-methyl-1,3,4-oxadiazol-2-yl)carbonyl]amino]ethyl]-6-oxo-N-(phenylmethyl)-4-pyrimidinecarboxamide
CAS:1193687-87-4
Raltegravir EP Impurity E Raltegravir USP RC E 4
RGV05

1,6-Dihydro-6-imino-4-(1-piperidinyl)-1-(sulfooxy)-2-pyrimidinamine
CAS:83701-22-8
Minoxidil Sulfate Ester Minoxidil N-O-Sulfate
MNX52

1,6-DIHYDRO-6-OXO-(3,4'-BIPYRIDINE)-5-CARBONITRILE
CAS:62749-26-2
Amrinone USP RC C
ANX23

1,6-Dihydro-6-oxo-1-phenyl-3-pyridinecarboxylic acid
CAS:77837-08-2
Pirfenidone 5-Carboxylic Acid Impurity
PFD50A

1,6-Dihydro-6-oxo-1-phenyl-3-pyridinecarboxylic acid sodium salt
CAS:1189982-99-7
Pirfenidone 5-Carboxylic Acid Impurity (Sodium)
PFD50N

1,6-Dihydro-N-[2-(nitrooxy)ethyl]-6-oxo-3-pyridinecarboxamide
CAS:113743-17-2
Nicorandil 6-Hydroxy Impurity
NCR56

1,7-DIHYDRO-6H-PURIN-6-ONE
CAS:68-94-0
Azathioprine EP Impurity F Azathioprine BP Impuri
ATP06

1,7-DIHYDRO-6H-PURIN-6-ONE
CAS:68-94-0
Didanosine EP Impurity A Didanosine USP RC A Hyp
DDN01

1,8-Bis(4-((1,4,8,11-Tetraazacyclotetradecan-1-yl)methyl)benzyl)-1,4,8,11-tetraazacyclo tetradecane
CAS:414858-02-9
Plerixafor Impurity 2
PXF62

1,8-DIACETYLOXY-3-(ACETYLOXYMETHYL)-9,10-ANTHRACENEDIONE
CAS:25395-11-3
Diacerein EP Impurity H Triacetyl Aloe Emodin
DAR08

1,8-Dihydroxy-3-(hydroxymethyl)-9,10-anthracenedione
CAS:481-72-1
Diacerein EP Impurity B Aloe Emodin
DAR02

1,8-DIHYDROXYANTHRACEN-9(10H)-ONE
CAS:1143-38-0
Dithranol Anthralin
DTR00

1,8-DIHYDROXYANTHRACENE-9,10-DIONE
CAS:117-10-2
Dithranol EP Impurity B Dantron
DTR02

1-((1,3-DIOXOLAN-2-YL)METHYL)-4-(1,3-DIMETHYLUREIDO)-1H-IMIDAZOLE-5-CARBOXYLIC ACID
Doxofylline Carboxylic Acid Impurity
DXF51

1-((1,3-DIOXOLAN-2-YL)METHYL)-N-METHYL-4-(METHYLAMINO)-1H-IMIDAZOLE-5-CARBOXAMIDE
CAS:1429636-74-7
Doxofylline USP RC B Descarbonyl Doxofylline
DXF22

1-((1H-1,2,4-TRIAZOL-1-YL)METHYL)-5-(4-CHLOROBENZYL)-2,2-DIMETHYLCYCLOPENTANOL
CAS:125116-23-6
Metconazole
MCZ00

1-((1R,2R)-2-(2,3-Dihydrobenzofuran-4-yl)cyclopropyl)propan-1-one
Tasimelteon RC 4
TLT64

1-((1R,3S)-3-Hydroxycyclohexyl)-3-(4-(2-(2-methylpyrazine-5-carboxamido)ethyl)phenylsulfonyl)urea
CAS:38207-37-3
Glipizide cis-3-Hydroxy
GLP53

1-((1R,4R)-4-Hydroxycyclohexyl)-3-(4-(2-(2-methylpyrazine-5-carboxamido)ethyl)phenylsulfonyl)urea
CAS:38207-36-2
Glipizide trans-4-Hydroxy
GLP54

1-((2'-(1H-Tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)-2- butyl-5-chloro-1H-imidazole-4-carboxylic acid
CAS:1350088-08-1
Losartan RC 5
LST65

1-((2'-(1H-Tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)-2-butyl-5-chloro-1H-imidazole-4-carbaldehyde
CAS:141949-90-8
Losartan RC 4
LST64

1-((2'-(Methoxycarbonyl)-[1,1'-biphenyl]-4-yl)methyl)-4-methyl-2-propyl-1H-benzo[d]imidazole-6-carboxylic acid
CAS:884330-11-4
Telmisartan Impurity 1
TST61

1-((2,4-Dichlorophenyl)diphenylmethyl)-1H-imidazole
CAS:37595-08-7
Clotrimazole RC 5
CLT65

1-((2,6-dichlorophenyl)diphenylmethyl)-1H-imidazole
CAS:35645-27-3
Clotrimazole RC 6
CLT66

1-((2-(2,4-DICHLOROPHENYL)-4-PROPYL-1,3-DIOXOLAN-2-YL)METHYL)-1H-1,2,4-TRIAZOLE
CAS:60207-90-1
Propiconazole
PCN00

1-((2-Chlorophenyl)(phenyl)methyl)benzene
CAS:56153-60-7
Clotrimazole RC 4
CLT64

1-((2-FLUOROPHENYL)CARBAMOYL)CYCLOPROPANECARBOXYLIC ACID
CAS:918642-61-2
Cabozantinib Impurity 3
CZN53

1-((2R,3R)-3-(4-(4-Cyanophenyl)thiazol-2-yl)-2-(2,5-difluorophenyl)-2-hydroxybutyl)-4-(1-((methyl(3-((2-(methylamino)acetoxy)methyl)pyridin-2-yl)carbamoyl)oxy)vinyl)-1H-1,2,4-triazol-4-ium chloride
Isavuconazole RC 10
ISV70

1-((2R,3R)-3-(4-(4-Cyanophenyl)thiazol-2-yl)-2-(2,5-dimethylphenyl)-2-hydroxybutyl)-4-(1-((methyl(3-(4-(methylamino)-3-oxobutyl)pyridin-2-yl)carbamoyl)oxy)ethyl)-1H-1,2,4-triazol-4-ium chloride
Isavuconazole RC 8
ISV68

1-((2R,3R)-3-(4-(Aminomethyl)thiazol-2-yl)-2-(2,5-difluorophenyl)-2-hydroxybutyl)-4-(1-((methyl(3-((2-(methylamino)acetoxy)methyl)pyridin-2-yl)carbamoyl)oxy)ethyl)-1H-1,2,4-triazol-4-ium chloride
Isavuconazole RC 2
ISV62

1-((2R,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)-4-(hydroxyamino)pyrimidin-2(1H)-one
CAS:2/4/3258
Molnupiravir IP Impurity A Molnupiravir RC 2 N4-
MNP51

1-((2R,3S)-3-(4-(4-CYANOPHENYL)THIAZOL-2-YL)-2-(2,5-DIFLUOROPHENYL)-2-HYDROXYBUTYL)-4-(1-((METHYL(3-((2-(METHYLAMINO)ACETOXY)METHYL)PYRIDIN-2-YL)CARBAMOYL)OXY)VINYL)-1H-1,2,4-TRIAZOL-4-IUM CHLORIDE
Isavuconazole RC 9
ISV69

1-((2R,3S,4R,5R)-3,4-DIHYDROXY-5-(HYDROXYMETHYL)-3-METHYLTETRAHYDROFURAN-2-YL)PYRIMIDINE-2,4(1H,3H)-DIONE
CAS:114262-49-6
Sofosbuvir Methylarabinosyl Impurity
SFS56

1-((2R,4R,5R)-4-Chloro-5-(trityloxymethyl)-tetrahydrofuran-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione
CAS:34627-62-8
Zidovudine RC 1
ZDV61

1-((2R,4R,5R)-4-Hydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)-5-iodopyrimidin-2(1H)-one
CAS:93265-81-7
Idoxuridine Deoxy Impurity Ropidoxuridine
IRD52

1-((2R,4R,5R)-4-Hydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)-5-iodopyrimidine-2,4(1H,3H)-dione 5-Iodo-1-(2-deoxy-�-D-erythryo-pentofuranosyl)pyrimidine-2,4(1H,3H)-dione
CAS:54-42-2
Idoxuridine
IRD00

1-((2R,4S,5R)-3,3-Difluoro-4-hydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione
CAS:114248-23-6
Gemcitabine EP Impurity C Gemcitabine Dione Impur
GCT03

1-((2R,4S,5R)-3-Chloro-4-hydroxy-5-(hydroxymethyl)-3-methyl-tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione
CAS:1496551-72-4
Sofosbuvir Desphosphate Chloro Analog
SFS65

1-((2R,4S,5R)-4-(Benzyloxy)-3-fluoro-5-(hydroxymethyl)-3-methyl-tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione
Sofosbuvir 3-O-Benzyl Desphosphate
SFS61

1-((2R,4S,5R)-4-Hydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)-5-iodopyrimidine-2,4(1H,3H)-dione
CAS:93780-25-7
Idoxuridine 3-Epi Impurity
IRD53

1-((2R,4S,5R)-5-(Benzyloxymethyl)-3-fluoro-4-hydroxy-3-methyl-tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione
Sofosbuvir 5-O-Benzyl Desphosphate
SFS62

1-((2R,5S)-2-(Hydroxymethyl)-1,3-oxathiolan-5-yl)-4-((1-((2R,5S)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl)-2-oxo-1,2-dihydropyrimidin-4-ylamino)methylamino)pyrimidin-2(1H)-one
Lamivudine Dimer
LMV44

1-((2S,3R)-3-(4-(4-Cyanophenyl)thiazol-2-yl)-2-(2,5-dimethylphenyl)-2-methylbutyl)-4-(1-((methyl(3-(4-(m ethylamino)-3-oxobutyl)pyridin-2-yl)carbamoyl)oxy)ethyl)-1H-1,2,4-triazol-4-ium chloride
Isavuconazole RC 11
ISV71

1-((2S,4S,5S)-4-Hydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)-5-iodopyrimidine-2,4(1H,3H)-dione
CAS:162239-35-2
Idoxuridine Enantiomer
IRD50

1-((3-fluorophenyl)carbamoyl)cyclopropanecarboxylic acid
CAS:1247859-37-5
Cabozantinib Impurity 4
CZN54

1-((3aR,4R,6R,6aR)-6-(Hydroxymethyl)-2,2-dimethyl-tetrahydrofuro[3,4-d][1,3]dioxol-4-yl)pyrimidine-2,4(1H,3H)-dione
CAS:362-43-6
Molnupiravir RC 6
MNP66

1-((3aR,4S,6aS)-4-Hydroxy-hexahydrocyclopenta[c]pyrrol-2(1H)-yl)-3-tosylurea
CAS:96860-37-6
Gliclazide 6�-Hydroxy
GCZ50

1-((3aR,5s,6aS)-5-Hydroxy-hexahydrocyclopenta[c]pyrrol-2(1H)-yl)-3-tosylurea
CAS:96860-48-9
Gliclazide 7�-Hydroxy
GCZ52

1-((3aS,4R,6R,6aS)-6-(Hydroxymethyl)-2,2-dimethyl-tetrahydrofuro[3,4-d][1,3]dioxol-4-yl)-1H-1,2,4-triazole-3-carboxamide
CAS:69313-80-0
Ribavirin RC 3
RBV63

1-((3R,4R)-4-METHYL-3-(METHYL(7H-PYRROLO[2,3-D]PYRIMIDIN-4-YL)AMINO)PIPERIDIN-1-YL)ETHANONE
CAS:477600-76-3
Tofacitinib Impurity Z
TFC86

1-((3S,8R,9S,10R,13S,14S)-3-Hydroxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)ethanone
CAS:1162-53-4
Pregnenolone 16-Dehydro
PNL60

1-((3S,8S,9S,10R,13S,14S,17S)-3-HYDROXY-10,13-DIMETHYL-2,3,4,7,8,9,10,11,12,13,14,15,16,17-TETRADECAHYDRO-1H-CYCLOPENTA[A]PHENANTHREN-17-YL)ETHANONE
CAS:145-13-1
Pregnenolone
PNL00

1-((3S,9R,10S,13S,14R,17S)-3-Hydroxy-10,13-dimethyl-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)ethanone
CAS:1819-14-3
Dydrogesterone Impurity 1
DYD51

1-((3S,9S,10R,13S,14R,17S)-3-Hydroxy-10,13-dimethyl-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)ethanone
CAS:1158830-87-5
Pregnenolone 7,8-Dehydro
PNL78

1-((4-(6,7-Dimethoxyquinolin-4-yloxy)phenyl)carbamoyl)cyclopropanecarboxylic acid
CAS:849217-77-2
Cabozantinib Impurity 5
CZN55

1-((4-CHLOROPHENYL)(PHENYL)METHYL)-4-(PHENYLSULFONYL)PIPERAZINE
CAS:1391052-52-0
Cetirizine Phenylsulfone
CTR59

1-((4-Chlorophenyl)(phenyl)methyl)-4-methylpiperazine
CAS:82-93-9
Chlorcyclizine 4-Chloro Cyclizine
CCZ00B

1-((4-CHLOROPHENYL)(PHENYL)METHYL)-4-METHYLPIPERAZINE HYDROCHLORIDE
CAS:14362-31-3
Chlorcyclizine Hydrochloride 4-Chloro Cyclizine H
CCZ00H

1-((4-CHLOROPHENYL)(PHENYL)METHYL)PIPERAZINE
CAS:303-26-4
Meclizine EP Impurity H Meclozine EP Impurity H
MCL08

1-((4-CHLOROPHENYL)(PHENYL)METHYL)PIPERAZINE
CAS:303-26-4
Chlorcyclizine N-Desmethyl Analog Cetirizine EP I
CCZ50

1-((4-FLUOROPHENYL)CARBAMOYL)CYCLOPROPANECARBOXYLIC ACID
CAS:849217-48-7
Cabozantinib Impurity 1
CZN51

1-((5-Nitrofuran-2-yl)methylene)semicarbazide
CAS:59-87-0
Nitrofurazone Nitrofural
NFN00

1-((5R)-1-Methyl-5-((5-(2-(phenylsulfonyl)ethyl)-1H-indol-3-yl)methyl)pyrrolidin-2-yl)propan-2-one
Eletriptan Acetonyl Impurity
ETT56B

1-((8R,9S,10R,13S,14S)-10,13-Dimethyl-17-(pyridin-3-yl)-2,7,8,9,10,11,12,13,14,15-decahydro-1H-cyclopenta[a]phenanthren-3-yl)ethanone
Abiraterone Anhydro 3-Acetyl Impurity 3-Deoxy-3-a
ABR63

1-((R)-3-(3-(3-Isopropyl-5-methyl-4H-1,2,4-triazol-4-yl)-8-azabicyclo[3.2.1]octan-8-yl)-1-phenylpropyl)-3-((1S)-3-(3-(3-isopropyl-5-methyl-4H-1,2,4-triazol-4-yl)-8-azabicyclo[3.2.1]octan-8-yl)-1- phenylpropyl) urea
Maraviroc JCS Impurity-4
MRV54

1-((R)-3-(4-((3-((R)-3-(4-AMINO-3-(4-PHENOXYPHENYL)-1H-PYRAZOLO[3,4-D]PYRIMIDIN-1-YL)PIPERIDIN-1-YL)-3-OXOPROPYL)AMINO)-3-(4-PHENOXYPHENYL)-1H-PYRAZOLO[3,4-D]PYRIMIDIN-1-YL)PIPERIDIN-1-YL)PROP-2-EN-1-ONE
CAS:2031255-23-7
Ibrutinib Dimer
IBT97

1-((R)-3-(4-Amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidin-1-yl)-3-((R)-3-(4-methyl-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidin-1-yl)propan-1-one
CAS:1987905-93-0
Ibrutinib Impurity 6
IBT56

1-((R)-3-(5-(3-((R)-3-(4-Amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidin-1-yl)-3-oxopropyl)-4-imino-3-(4-phenoxyphenyl)-4,5-dihydropyrazolo[3,4-d]pyrimidin-1-yl)piperidin-1-yl)prop-2-en-1-one
Ibrutinib Impurity 14
IBT64

1-({(4R,7S,10S,13S,16S,19R)-19-(Acetylamino)-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-16-(4-hydroxybenzoyl)-13-[(1S)-1-methylpropyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosan-4-yl}carbonyl)-L-prolyl-L-leucylglycinamide
CAS:10551-48-1
Oxytocin N-Acetyl Analog
OTN50

1-({[2'-(1H-1,2,3,4-Tetrazol-5-yl)-4-biphenylyl]methyl}(isobutyl)amino)-1-pentanone
CAS:1314799-74-0
Valsartan RC 3 Valsartan Decarboxylic Acid
VST73

1-(1,1-DIMETHOXYETHYL)-4-METHYLBENZENE
CAS:53578-01-1
Celecoxib Impurity 3
CLC53

1-(1,1-Dimethylethyl)-3,5-dimethylbenzene
CAS:98-19-1
Xylometazoline EP Impurity D
XMZ04

1-(1,2,3,6-TETRAHYDROPYRIDIN-4-YL)-1,3-DIHYDRO-2H-BENZIMIDAZOL-2-ONE
CAS:2147-83-3
Droperidol EP Impurity A
DPL01

1-(1-(1-(Naphthalen-1-yl)ethoxy)ethyl)naphthalene
CAS:136908-26-4
Cinacalcet Impurity 12
CCC72

1-(1-(2-Benzyl-6-chlorophenoxy)propan-2-yl)piperidine
Benproperine RC 5
BNP65

1-(1-(2-Benzylphenoxy)propan-2-yl)piperidine
CAS:2156-27-6
Benproperine (Base)
BNP00B

1-(1-(4,4-Bis(4-Fluorophenyl)butyl)piperidin-4-yl)-5-hydroxy-1H-benzo[d]imidazol-2(3H)-one
Pimozide 5-Hydroxy Impurity
PZD55

1-(1-(4,4-Bis(4-Fluorophenyl)butyl)piperidin-4-yl)-6-hydroxy-1H-benzo[d]imidazol-2(3H)-one
Pimozide 6-Hydroxy Impurity
PZD56

1-(1-(4-(2-Fluorophenyl)-4-oxobutyl)-1,2,3,6-tetrahydropyridin-4-yl)-1H-benzo[d]imidazol-2(3H)-one
CAS:1026015-45-1
Droperidol EP Impurity B 4-Desfluoro 2-Fluoro Dro
DPL02

1-(1-(4-(4-FLUOROPHENYL)-4-OXOBUTYL)-1,2,3,6-TETRAHYDROPYRIDIN-4-YL)-1H-BENZO[D]IMIDAZOL-2(3H)-ONE
CAS:548-73-2
Droperidol
DPL00

1-(1-(4-(4-Fluorophenyl)-4-oxobutyl)-1,2,3,6-tetrahydropyridin-4-yl)-1H-benzo[d]imidazol-2(3H)-one N-oxide
CAS:466118-75-2
Droperidol EP Impurity D Droperidol N-Oxide
DPL04

1-(1-(4-Methoxyphenyl)-2-(methyl(nitroso)amino)ethyl)cyclohexanol
CAS:2680662-11-5
Venlafaxine N-Nitroso Analog
VLF49

1-(1-Benzyl-1H-imidazol-4-yl)-1-(2,3-dimethylphenyl)ethanol
CAS:1587636-55-2
Medetomidine RC6
MDT66

1-(1-Benzyl-1H-imidazol-5-yl)-1-(2,3-dimethyl phenyl)ethanol
CAS:2250243-44-6
Medetomidine Hydroxy N-Benzyl Impurity
MDT54

1-(1-Ethoxyethyl)-1H-pyrazol-4-ylboronic acid
CAS:2227194-01-4
Baricitinib RC 11
BRC71

1-(1-ETHOXYETHYL)-4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1H-PYRAZOLE
CAS:1029716-44-6
Baricitinib RC 12
BRC72

1-(1-Methylethoxy)-2-(1-methylethyl)benzene
CAS:14366-59-7
Propofol EP Impurity K
PPF11

1-(10,11-Dihydro-5H-dibenzo[a,d][7]annulen-5-yl)-1H-imidazole nitrate
Eberconazole Nitrate Dideschloro Impurity
EBC72N

1-(10-(2-(Dimethylamino)propyl)-10H-phenothiazin-2-yl)propan-1-one
CAS:362-29-8
Promethazine RC 2
PMZ62

1-(10H-Phenothiazin-10-yl)propan-2-ol
CAS:32209-47-5
Promethazine RC 4
PMZ64

1-(10H-Phenothiazin-10-yl)propan-2-one
CAS:15375-56-1
Promethazine RC 3
PMZ63

1-(1H -Benzimidazol-2-yl)-4-(3-methoxypropoxy)-3-methylpyridinium-2-carboxylate
CAS:1807988-36-8
Rabeprazole Picolinium Salt
RBP43