Molcan Corporation (Page 6) @ ChemBuyersGuide.com, Inc.

1-(1H-Benzimidazol-2-yl)-3-methyl-4-oxo-1,4-dihydropyridine-2-carboxylic acid
CAS:1163685-30-0
Rabeprazole EP Impurity C (Acid) Rabeprazole USP
RBP03A

1-(2,4-Dichloro-3-(3-chloro-5-(trifluoromethyl)pyridin-2-yloxy)phenyl)-3-(2,6-difluorobenzoyl)urea
CAS:71422-67-8
Fluazuron 3,5-Dichloro Impurity Chlorfluazuron
FZR35

1-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-yl)ethanone hydrochloride
CAS:98164-08-0
Oxiconazole USP RC C
OCZ23H

1-(2,4-DICHLOROPHENYL)-2-(4H-1,2,4-TRIAZOL-4-YL)ETHANONE
CAS:132653-23-7
Propiconazole RC 4
PCN64

1-(2,4-DIFLUOROPHENYL)-2-(1H-1,2,4-TRIAZOL-1-YL)ETHANONE
CAS:86404-63-9
Fluconazole EP Impurity E Voriconazole EP Impurit
FLC05

1-(2,4-DIFLUOROPHENYL)-2-(1H-1,2,4-TRIAZOL-1-YL)ETHANONE
CAS:86404-63-9
Voriconazole EP Impurity A Voriconazole USP RC C
VRC01

1-(2,4-DIFLUOROPHENYL)-2-(1H-1,2,4-TRIAZOL-1-YL)ETHANONE
CAS:86404-63-9
Efinaconazole Keto Impurity Fluconazole EP Impuri
EFC42

1-(2,4-Dihydroxy-6-methoxyphenyl)-4-(pyrrolidin-1-yl)butan-1-one
Buflomedil EP Impurity C
BFM03

1-(2,4-Dimethylphenoxy)propan-2-amine
CAS:180966-61-4
Mexiletine 2,4-Dimethyl Analog (Base)
MLT50B

1-(2,4-Dimethylphenoxy)propan-2-amine hydrochloride
CAS:29238-40-2
Mexiletine 2,4-Dimethyl Analog (HCl)
MLT50H

1-(2,4-DIMETHYLPHENYL)-4,4,4-TRIFLUOROBUTANE-1,3-DIONE
CAS:94856-20-9
Celecoxib Impurity 11
CLC61

1-(2,4-Dinitrophenylsulfonyl)benzene
CAS:896-80-0
Dapsone RC 6
DPS66

1-(2,5-dimethylphenoxy)propan-2-amine
CAS:117322-92-6
Mexiletine RC 2 (Base)
MLT62B

1-(2,5-DIMETHYLPHENOXY)PROPAN-2-AMINE HYDROCHLORIDE
CAS:29361-43-1
Mexiletine RC 2 (HCl)
MLT62H

1-(2,5-DIOXOIMIDAZOLIDIN-4-YL)UREA
CAS:97-59-6
Allantoin
AIX00

1-(2,6-DICHLOROBENZYL)-1H-IMIDAZOLE
CAS:102993-73-7
Isoconazole Impurity 4
ISZ54

1-(2,6-DICHLOROPHENYL)-1,3-DIHYDRO-2H-INDOL-2-ONE
CAS:15362-40-0
Aceclofenac EP Impurity I Diclofenac EP Imurity A
ACF09

1-(2,6-Dichlorophenyl)-1,3-dihydro-2H-indol-2-one Diclofenac Amide
CAS:15362-40-0
Diclofenac EP Impurity A Diclofenac USP RC A Ace
DCF01

1-(2,6-Dichlorophenyl)indoline-2,3-dione
CAS:24542-74-3
Diclofenac Impurity 4
DCF64

1-(2,6-DICHLOROPHENYL)PIPERAZINE
CAS:63386-61-8
Aripiprazole Impurity 8
ARP88

1-(2,6-DIFLUOROBENZYL)-1H-1,2,3-TRIAZOLE-4-CARBOXYLIC ACID
CAS:166196-11-8
Rufinamide RC 1
RFN61

1-(2,6-Difluorobenzyl)-1H-1,2,3-triazole-4-carboxylic acid methyl ester
CAS:217448-86-7
Rufinamide USP RC B Rufinamide Methyl Ester Analo
RFN22

1-(2,6-DIHYDROXYPHENYL)ETHANONE
CAS:699-83-2
Cromolyn RC 1 2-Acetylresorcinol
CMY61

1-(2,6-Dimethylphenoxy)-N-hydroxy-2-propanamine
CAS:55304-17-1
Mexiletine N-Hydroxy Impurity (Base)
MLT53B

1-(2,6-Dimethylphenoxy)-N-hydroxy-2-propanamine oxalate
CAS:57204-78-1
Mexiletine N-Hydroxy Impurity (Oxalate)
MLT53X

1-(2,6-DIMETHYLPHENOXY)PROPAN-2-OL
CAS:61102-09-8
Mexiletine RC 3
MLT63

1-(2,6-DIMETHYLPHENOXY)PROPAN-2-ONE
CAS:53012-41-2
Mexiletine EP Impurity B
MLT02

1-(2,6-DIMETHYLPHENYL)-1,5,6,7-TETRAHYDRO-2H-AZEPIN-2-ONE
CAS:1797894-80-4
Bupivacaine EP Impurity C Levobupivacaine Impurit
BVC03

1-(2,6-DIMETHYLPHENYL)-3-(3-HYDROXYPROPYL)THIOUREA
CAS:120077-91-0
Xylazine EP Impurity D
XLZ04

1-(2-((2,4,5-Trimethylphenyl)thio)phenyl)piperazine
CAS:1240670-87-4
Vortioxetine Impurity 9 (Base)
VXT59B

1-(2-((2,4,5-Trimethylphenyl)thio)phenyl)piperazine HBr
Vortioxetine Impurity 9 (HBr)
VXT59H

1-(2-((2,4-DIMETHYLPHENYL)SULFONYL)PHENYL)PIPERAZINE
CAS:1639263-80-1
Vortioxetine Sulfone
VXT84

1-(2-((2,4-Dimethylphenyl)thio)phenyl)-4-nitrosopiperazine
CAS:2925447-38-5
Vortioxetine N-Nitroso Impurity
VXT50

1-(2-((3-Bromo-2,4-dimethylphenyl)thio)phenyl)piperazine hydrobromide
Vortioxetine 3-Bromo Impurity
VXT83H

1-(2-((3-Chloro-2,4-dimethylphenyl)thio)phenyl)piperazine hydrobromide
Vortioxetine 3-Chloro Impurity
VXT86H

1-(2-(2,4,6-Trichloro-3-hydroxyphenyl)acetyl)guanidine
Guanfacine 3-Hydroxy 4-Chloro
GFC55

1-(2-(2,4-Dimethylphenylsulfinyl)phenyl)piperazine
CAS:1429908-35-9
Vortioxetine Sulfoxide
VXT85

1-(2-(2,5-Difluorophenyl)-2-hydroxy-3-(5-(4-(methylamino)phenyl)thiazol-2-yl)butyl)-4-(1-((methyl(3-((2-(methylamino)acetoxy)methyl)pyridin-2-yl)carbamoyl)oxy)ethyl)-1H-1,2,4-triazol-4-ium chloride
Isavuconazole RC 15
ISV75

1-(2-(2-Benzyl-6-chlorophenoxy)propyl)piperidine
Benproperine RC 6
BNP66

1-(2-(2-Chloroethoxy)ethyl)-2-methyl-5-nitro-1H-imidazole
CAS:16156-93-7
Metronidazole RC 2 Chloroethoxy Metronidazole
MND62

1-(2-(2-Hydroxy-3-(nitroso(propyl)amino)propoxy)phenyl)-3-phenylpropan-1-one
Propafenone N-Nitroso Impurity
PRP48

1-(2-(2-Methoxyphenoxy)ethylamino)-3-(9H-carbazol-8-yloxy)propan-2-one
CAS:933442-50-3
Carvedilol Ketone Impurity
CVD50

1-(2-(3-(((2R,3R,4R,5S,6R)-3,4-Dihydroxy-6-(hydroxymethyl)-5-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)(propyl)amino)-2-hydroxypropoxy)phenyl)-3-phenylpropan-1-one
Propafenone Lactose Adduct
PRP53

1-(2-(3-(Benzylamino)-2-hydroxypropoxy)phenyl)-3-phenylpropan-1-one
CAS:178691-47-9
Propafenone N-Despropyl N-Benzyl
PRP54

1-(2-(4,6-Dioxo-tetrahydro-2H-pyran-2-yl)ethyl)-5-(4-fluorophenyl)-2-isopropyl-N,4-diphenyl-1H-pyrrole-3-carboxamide
Atorvastatin 3-Oxo Lactone
ATV46

1-(2-(4-((1R,2S)-6-Hydroxy-2-phenyl-1,2,3,4-tetrahydronaphthalen-1-yl)phenoxy) ethyl)pyrrolidin-2-one
CAS:366017-88-1
Lasofoxifene Lactam 2-Oxo Lasofoxifene
LSF52

1-(2-(4-((1RS,2SR)-6-Methoxy-2-phenyl-1,2,3,4-tetrahydronaphthalen-1-yl)phenoxy) ethyl)pyrrolidine
CAS:4796-75-2
Lasofoxifene 7-Methoxy Racemate
LSF57

1-(2-(4-(2-(2,4-Dimethylphenylthio)phenyl)piperazin-1-yl)phenyl)piperazine
CAS:1240670-85-2
Vortioxetine Impurity 14
VXT64

1-(2-(4-Methoxybenzylamino)-5-chlorophenyl)-2,2,2-trifluoroethanone
CAS:173676-54-5
Efavirenz RC 2
EFV82B

1-(2-(DECANOYLOXY)ETHYL)-4-(3-(2-(TRIFLUOROMETHYL)-10H-PHENOTHIAZIN-10-YL)PROPYL)PIPERAZINE 1, 4-DIOXIDE
CAS:76005-65-7
Fluphenazine Decanoate Di-N-Oxide
FPD50

1-(2-(DIMETHYLAMINO)ETHYL)-1H-TETRAZOLE-5-THIOL
CAS:61607-68-9
Cefotiam RC 1
CTH61B

1-(2-(ETHYLTHIO)ETHYL)-2-METHYL-4-NITRO-1H-IMIDAZOLE
CAS:13230-19-8
Tinidazole RC 2
TND62

1-(2-(ETHYLTHIO)ETHYL)-2-METHYL-5-NITRO-1H-IMIDAZOLE
CAS:28795-33-7
Tinidazole RC 1
TND61

1-(2-(Methylthio)-10H-phenothiazin-10-yl)ethanone
CAS:23503-69-7
Metopimazine RC 1
MPZ61

1-(2-(Piperazin-1-yl)phenyl)piperazine
CAS:1446750-99-7
Vortioxetine Impurity 20
VXT70

1-(2-AMINO-5-CHLOROPHENYL)-2,2,2-TRIFLUOROETHANONE
CAS:154598-53-5
Efavirenz RC 1 (Base)
EFV81B

1-(2-AMINO-5-CHLOROPHENYL)-2,2,2-TRIFLUOROETHANONE HCL
CAS:173676-59-0
Efavirenz RC 1 (HCl)
EFV81H

1-(2-AMINOETHYL)-3-(5-BROMOQUINOXALIN-6-YL)THIOUREA
CAS:134892-47-0
Brimonidine RC 2
BRM62

1-(2-Aminoethyl)-3-(5-bromoquinoxalin-6-yl)urea
CAS:1216379-05-3
Brimonidine EP Impurity G (Base)
BRM07B

1-(2-Aminoethyl)-3-(5-bromoquinoxalin-6-yl)urea trifluoroacetic acid salt
CAS:1391054-10-6
Brimonidine EP Impurity G (TFA)
BRM07T

1-(2-BENZYLPHENOXY)PROPAN-2-OL
CAS:5029-76-5
Benproperine RC 8
BNP68

1-(2-BROMOETHOXY)-2-(2,2,2-TRIFLUOROETHOXY)BENZENE
CAS:160969-00-6
Silodosin RC 1
SLD71

1-(2-BROMOETHOXY)-2-ETHOXYBENZENE
CAS:3259-03-8
Tamsulosin EP Impurity I
TMS09

1-(2-BROMOPHENYL)PIPERAZINE
CAS:1011-13-8
Vortioxetine Impurity 13 (Base)
VXT63B

1-(2-BROMOPHENYL)PIPERAZINE DIHYDROCHLORIDE
Vortioxetine Impurity 13 (2 HCl)
VXT63H

1-(2-Chloro-10,11-dihydro-5H-dibenzo[a,d][7]annulen-5-yl)-1H-imidazole nitrate
Eberconazole Nitrate 4-Deschloro Impurity
EBC54N

1-(2-CHLORO-4-(4-CHLOROPHENYL)BUTYL)-1H-IMIDAZOLE
CAS:67085-12-5
Butoconazole 2-Chloro Impurity
BCZ61

1-(2-CHLORO-4-NITROPHENYL)ETHANONE
CAS:67818-41-1
Propiconazole RC 3
PCN63

1-(2-Chloro-ethyl)-3-cyclohexyl-1-nitrosourea
CAS:13010-47-4
Lomustine
LMS00

1-(2-Chloroethyl)-3-(cis-4-hydroxycyclohexyl)-1-nitrosourea
CAS:52049-26-0
Lomustine cis-4-Hydroxy Impurity
LMS54

1-(2-CHLOROETHYL)-3-(DICYCLOPROPYLMETHYL)UREA
CAS:54187-03-0
Rilmenidine EP Impurity B
RMD02

1-(2-Chloroethyl)-3-(trans-4-hydroxycyclohexyl)-1-nitrosourea
CAS:56239-24-8
Lomustine trans-4-Hydroxy Impurity
LMS64

1-(2-Chloroethyl)-3-cyclohexylurea N-(2-Chloroethyl)-N-cyclohexylurea
CAS:13908-11-7
Lomustine USP RC B Lomustine EP Impurity B
LMS22

1-(2-CHLOROETHYL)PIPERIDINE
CAS:3/2/1932
Levocloperastine CEP Impurity (Base)
LCP62B

1-(2-CHLOROETHYL)PIPERIDINE HYDROCHLORIDE
CAS:2008-75-5
Levocloperastine CEP Impurity (HCl)
LCP62H

1-(2-Chlorophenyl)-5-[6-[[[(4-chlorophenyl)carbamimidoyl]carbamimidoyl]amino]hexyl]biguanide
CAS:2508008-02-2
Chlorhexidine Digluconate EP Impurity O
CXG15

1-(2-CHLOROPHENYL)ETHANONE
CAS:2142-68-9
Amlodipine Impurity 12
AML72

1-(2-Deoxy-ß-D-threo-pentofuranosyl)-5-methylpyrimidine-2,4(1H,3H)-dione
CAS:16053-52-4
Zidovudine EP Impurity F 3'-ß-Thymidine Stavudin
ZDV06

1-(2-Deoxy-ß-D-threopentofuranosyl)-5-methylpyrimidine-2,4(1H,3H)-dione
CAS:16053-52-4
Stavudine EP Impurity B Zidovudine EP Impurity F
STV02

1-(2-Dimethylamino-1-phenylethyl) cyclohexanol Desmethoxy Venlafaxine
CAS:93413-86-6
Venlafaxine Desmethoxy Impurity Venlafaxine RC 4
VLF37B

1-(2-ETHOXYETHYL)-1,3-DIHYDRO-2H-BENZIMIDAZOL-2-ONE
CAS:101953-61-1
Emedastine EP Impurity A
EDS01

1-(2-Ethoxyethyl)-2-(1-nitrosopiperidin-4-yl)-1H-benzo[d]imidazole
Bilastine RC 2
BLT62B

1-(2-Ethoxyethyl)-2-(4-methylhexahydro-1H-1,4-diazepin-1-yl)-1H-benzimidazole
CAS:87233-61-2
Emedastine (Base)
EDS00B

1-(2-Ethoxyethyl)-2-(4-methylhexahydro-1H-1,4-diazepin-1-yl)-1H-benzimidazole bis[hydrogen (2E)-butenedioate]
CAS:87233-62-3
Emedastine (Difumarate)
EDS00F

1-(2-ETHOXYETHYL)-2-(HEXAHYDRO-1H-1,4-DIAZEPIN-1-YL)-1H-BENZIMIDAZOLE
CAS:101954-20-5
Emedastine EP Impurity E
EDS05

1-(2-ETHOXYETHYL)-2-(PIPERIDIN-4-YL)-1H-BENZO[D]IMIDAZOLE
CAS:110963-63-8
Bilastine Impurity 4
BLT54B

1-(2-ETHOXYETHYL)-2-(PIPERIDIN-4-YL)-1H-BENZO[D]IMIDAZOLE HYDROCHLORIDE
CAS:1841081-72-8
Bilastine Impurity 4 (HCl)
BLT54H

1-(2-FLUORO-4-NITROPHENYL)PIPERAZINE
CAS:154590-33-7
Eperezolid RC 1
EPZ01

1-(2-Fluoro-6-(trifluoromethyl)benzyl)-5-(2-fluoro-3-methoxyphenyl)-6-methylpyrimidine-2,4(1H,3H)-dione
CAS:1150560-59-0
Elagolix RC 4
EGX64

1-(2-FLUORO-6-(TRIFLUOROMETHYL)BENZYL)-5-BROMO-6-METHYLPYRIMIDINE-2,4(1H,3H)-DIONE
CAS:830346-48-0
Elagolix RC 2
EGX62

1-(2-FLUORO-6-(TRIFLUOROMETHYL)BENZYL)-5-IODO-6-METHYLPYRIMIDINE-2,4(1H,3H)-DIONE
CAS:1150560-54-5
Elagolix RC 5
EGX65

1-(2-FLUOROBENZYL)-1H-PYRAZOLO[3,4-B]PYRIDINE-3-CARBOXIMIDAMIDE HYDROCHLORIDE
CAS:256499-19-1
Riociguat RC 4 (HCl)
RCG64H

1-(2-Fluorobiphenyl-4-yl)ethanone
CAS:42771-79-9
Flurbiprofen EP Impurity D
FLB04

1-(2-Hydroxy-4,6-dimethoxyphenyl)-4-(pyrrolidin-1-yl)butan-1-one
CAS:70585-61-4
Buflomedil EP Impurity A (Base)
BFM01B

1-(2-Hydroxy-4,6-dimethoxyphenyl)-4-(pyrrolidin-1-yl)butan-1-one hydrochloride
CAS:70585-57-8
Buflomedil EP Impurity A (HCl)
BFM01H

1-(2-HYDROXY-4-MERCAPTO-3-PROPYLPHENYL)ETHANONE
CAS:74891-64-8
Tipelukast RC 8
TLK68

1-(2-HYDROXY-4-METHYLPHENYL)PENTAN-1-ONE
CAS:173851-66-6
Amylmetacresol EP Impurity E
ASL05

1-(2-HYDROXY-5-METHYLPHENYL)PENTAN-1-ONE
CAS:150033-77-5
Amylmetacresol EP Impurity F
ASL06

1-(2-hydroxyethyl)-2-methyl-1H-imidazol-5-ol
CAS:138169-63-8
Metronidazole RC 6
MND66

1-(2-HYDROXYETHYL)-2-METHYL-5-NITROIMIDAZOLE
CAS:443-48-1
Metronidazole
MND00B

1-(2-HYDROXYETHYL)-2-METHYL-5-NITROIMIDAZOLE
CAS:443-48-1
Metronidazole Benzoate EP Impurity A Metronidazol
MNB01

1-(2-Hydroxyethyl)-2-methyl-5-nitroimidazole disodium phosphate
Metronidazole Disodium Phosphate
MND00P

1-(2-HYDROXYPHENYL)-3-PHENYLPROPAN-1-ONE
CAS:3516-95-8
Propafenone EP Impurity A
PRP01

1-(2-HYDROXYPHENYL)ETHANONE
CAS:118-93-4
Paracetamol EP Impurity I
PCM09

1-(2-ISOPROPYLTHIAZOL-4-YL)-N-METHYLMETHANAMINE
CAS:154212-60-9
Cobicistat RC 1 (Base)
CBC61B

1-(2-ISOPROPYLTHIAZOL-4-YL)-N-METHYLMETHANAMINE DIHYDROCHLORIDE
CAS:1185167-55-8
Cobicistat RC 1 (2HCl)
CBC61X

1-(2-ISOPROPYLTHIAZOL-4-YL)-N-METHYLMETHANAMINE HYDROCHLORIDE
CAS:908591-25-3
Cobicistat RC 1 (HCl)
CBC61H

1-(2-METHOXYPHENOXY)-3-(PIPERAZIN-1-YL)PROPAN-2-OL
CAS:162712-35-8
Ranolazine N-Desacetamido Impurity
RNL52B

1-(2-METHOXYPHENOXY)-3-(TRITYLOXY)PROPAN-2-YL CARBAMATE
Methocarbamol Impurity 5 O-Trityl Isomethocarbamo
MTC65

1-(2-Methoxyphenyl)tricyclo[3.3.1.13,7]decane
CAS:43109-77-9
Adapalene EP Impurity C Adapalene USP RC C o-Ada
ADP03

1-(2-METHYL-5-NITRO-1H-IMIDAZOL-1-YL)PROPAN-2-OL
CAS:3366-95-8
Secnidazole
SND00

1-(2-Methyl-5-nitro-1H-imidazol-1-yl)propan-2-one
CAS:31876-69-4
Orphenadrine RC 2
OPD62

1-(2-Methyl-5-nitro-1H-imidazol-1-yl)propan-2-one
CAS:31876-69-4
Ornidazole RC 2
ODZ62

1-(2-METHYL-5-NITRO-1H-IMIDAZOL-1-YL)PROPAN-2-YL FORMATE
Secnidazole Formate
SND51

1-(2-METHYLPROPYL)-4-[(3RS)-3-[4-(2-METHYLPROPYL)PHENYL]BUTYL]BENZENE
CAS:2143535-26-4
Ibuprofen EP Impurity I Ibuprofen BP Impurity I
IBP09

1-(2-METHYLPROPYL)PIPERIDIN-4-ONE
CAS:72544-16-2
Rifabutin EP Impurity A
RFB01

1-(3,4,5,6-TETRAHYDROPHTHALIMIDO)-2,3-DIHYDROXYPROPANE
CAS:62457-35-6
Rivaroxaban Glyceryl Phthalimide Impurity
RVR49

1-(3,4,5-TRIMETHOXYBENZYL)PIPERAZINE
CAS:52146-35-7
Trimetazidine EP Impurity A
TMD01B

1-(3,4-Dichlorophenyl)-4-(3-chloropropyl)piperazine
CAS:101364-27-6
Nefazodone 3,4-Dichlorophenyl Impurity
NFZ34B

1-(3,4-DICHLOROPHENYL)-5-ISOPROPYLBIGUANIDE
CAS:537-21-3
Proguanil EP Impurity F (Base) Proguanil USP RC F
PGN06B

1-(3,4-Dichlorophenyl)-5-isopropylbiguanide hydrochloride
CAS:6001-93-0
Proguanil EP Impurity F (HCl) Proguanil USP RC F
PGN06H

1-(3,4-DICHLOROPHENYL)PIPERAZINE
CAS:57260-67-0
Aripiprazole 3,4-DCPP Impurity (Base)
ARP33B

1-(3,4-DICHLOROPHENYL)PIPERAZINE DIHYDROCHLORIDE
CAS:76835-17-1
Aripiprazole 3,4-DCPP Impurity (2 HCl Salt)
ARP33X

1-(3,4-DICHLOROPHENYL)PIPERAZINE HYDROCHLORIDE
CAS:88138-89-0
Aripiprazole 3,4-DCPP Impurity (HCl Salt)
ARP33H

1-(3,4-Dihydroxyphenyl)-1-hydroxy-2-(methylamino)ethanesulfonic acid
Adrenaline RC 6
ADZ66

1-(3,4-DIHYDROXYPHENYL)-2-(METHYLAMINO)ETHANESULFONIC ACID
CAS:26405-77-6
Adrenaline RC 10 Epinephrine Sulfonic Acid
ADZ70

1-(3,4-DIHYDROXYPHENYL)-2-(METHYLAMINO)ETHANONE
CAS:99-45-6
Dipivefrine EP Impurity B Adrenalone Adrenaline
DPV02

1-(3,4-Dihydroxyphenyl)-2-[(1-methylethyl)amino]-ethanone
CAS:121-28-8
Isoprenaline EP Impurity A (Base) Isoproterenol E
IPL01B

1-(3,4-Dihydroxyphenyl)-2-[(1-methylethyl)amino]-ethanone HCl
CAS:16899-81-3
Isoprenaline EP Impurity A (HCl) Isoproterenol EP
IPL01H

1-(3,4-DIHYDROXYPHENYL)PROPAN-2-ONE
CAS:2503-44-8
Carbidopa EP Impurity G
CBD07

1-(3,4-Dimethoxybenzyl)-6,7-dimethoxy-2,2-dimethyl-1,2,3,4-tetrahydroisoquinolinium iodide
CAS:41431-32-7
Atracurium EP Impurity F (Iodide) Cisatracurium E
AUX06X

1-(3,4-DIMETHOXYBENZYL)-6,7-DIMETHOXY-2-METHYL-1,2,3,4-TETRAHYDROISOQUINOLINE
CAS:1699-51-0
Atracurium EP Impurity G DL-Laudanosine
AUX07B

1-(3,4-DIMETHOXYPHENYL)-2-METHYLPROPAN-1-ONE
CAS:14046-55-0
Verapamil EP Impurity L
VRP12

1-(3,4-DIMETHYLPHENYL)-3-METHYL-1H-PYRAZOL-5(4H)-ONE
CAS:277299-70-4
Eltrombopag RC 1
EBP61

1-(3,5-Anhydro-2-deoxy-ß-D-threo-pentofuranosyl)-5methylpyrimidine-2,4(1H,3H)-dione
CAS:7481-90-5
Stavudine EP Impurity F Stavudine BP Impurity F
STV06

1-(3,5-bis(Benzyloxy)phenyl)-2-(tert-butylamino)ethanol
CAS:28924-25-6
Terbutaline 3,5-dibenzyl ether
TBT35B

1-(3,5-Dihydroxyphenyl)-2-[(1,1-dimethylethyl)amino]-ethanone
CAS:139508-58-0
Terbutaline EP Impurity C (Base) Terbutaline USP
TBT03B

1-(3,5-DIHYDROXYPHENYL)-2-[(1,1-DIMETHYLETHYL)AMINO]-ETHANONE HYDROCHLORIDE
CAS:1246815-70-2
Terbutaline EP Impurity C (HCl) Terbutaline USP R
TBT03H

1-(3,5-Dihydroxyphenyl)-2-[(1-methylethyl)amino]ethanone
CAS:94200-14-3
Orciprenaline EP Impurity B Alupentketone
OCP02B

1-(3,5-Dihydroxyphenyl)-2-[(1-methylethyl)amino]ethanone sulfate
CAS:94200-15-4
Orciprenaline EP Impurity B (Sulfate) Alupentketo
OCP02S

1-(3-((4-((4-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)methyl)benzyl)-4-((4-chlorophenyl)(phenyl)methyl)piperazine
CAS:1207847-84-4
Meclizine EP Impurity D Meclozine EP Impurity D
MCL04

1-(3-(2-(Dimethylamino)ethyl)-3-hydroxy-2-oxoindolin-5-yl)-N-methyl methane sulfonamide
CAS:2250254-19-2
Sumatriptan 3-Hydroxy-2-Oxo Impurity
SMT32

1-(3-(2-(DIMETHYLAMINO)ETHYL-2-((5-((N-METHYLSULFAMOYL)METHYL)-1H-INDOL-3-YL)METHYL)-1H-INDO-5-YL)-N-METHYLMETHANESULFONAMIDE
Sumatriptan C-C Dimer
SMT43

1-(3-(2-(Methylsulfonyl)-10H-phenothiazin-10-yl)propyl)piperidine-4-carboxamide
CAS:14008-44-7
Metopimazine
MPZ00B

1-(3-(2-(Methylsulfonyl)-10H-phenothiazin-10-yl)propyl)piperidine-4-carboxylic acid
CAS:18182-00-8
Metopimazine acid
MPZ50A

1-(3-(2-Acetyl-5-(2-bromo-1-hydroxyethyl)benzyl)-2-acetyl-5-(2-bromo-1-hydroxyethyl)phenyl)propan-2-one
CAS:438246-23-2
Salbutamol RC 6
SAB66

1-(3-(2-Acetyl-5-(oxiran-2-yl)benzyl)-2-acetyl-5-(oxiran-2-yl)phenyl)propan-2-one
CAS:438246-24-3
Salbutamol RC 5
SAB65

1-(3-(2-Chloro-10H-phenothiazin-10-yl)propyl)-4-(2-hydroxyethyl)piperazine 1-oxide
CAS:1254074-25-3
Perphenazine Impurity 1
PPZ71

1-(3-(3,5-Dimethylphenoxy)-2-hydroxypropyl)-3,5-bis(oxiran-2-ylmethyl)-1,3,5-triazinane-2,4,6-trione
CAS:1392430-16-8
Metaxalone RC 4
MXL64

1-(3-(3-(4-CHLOROPHENYL)PROPOXY)PROPYL)PIPERIDINE
CAS:362665-56-3
Pitolisant (Base)
PLS00B

1-(3-(3-(4-Chlorophenyl)propoxy)propyl)piperidine hydrochloride
CAS:903576-44-3
Pitolisant (HCl)
PLS00H

1-(3-(4-(3-Chlorophenyl)piperazin-1-yl)propyl)-4-(2-phenoxyethyl)-1,2,4-triazolidine-3,5-dione
CAS:153707-88-1
Nefazodone 3,5-Dione
NFZ35

1-(3-(4-Acetyl-2-methoxyphenoxy)propyl)-4-(6-fluorobenzo[d]isoxazol-3-yl) piperidine 1-oxide
CAS:1375651-09-4
Iloperidone N-Oxide
ILP49

1-(3-(5-(4-(tert-Butoxy(imino)methyl)phenyl)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 4
ISV64

1-(3-(5-(4-Aminophenyl)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 3
ISV63

1-(3-(5-(4-Cyanophenyl)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 5
ISV65

1-(3-(5-(4-CYANOPHENYL)THIAZOL-2-YL)-2-(2,5-DIFLUOROPHENYL)-2-HYDROXYBUTYL)-4-(1-((METHYL(3-(5-METHYL-2-(3-((2-(METHYLAMINO)ACETOXY)METHYL)PYRIDIN-2-YL)-3,7,10-TRIOXO-4,6,11-TRIOXA-2,8-DIAZADODECAN-12-YL)PYRIDIN-2-YL)CARBAMOYL)OXY)ETHYL)-1H-1,2,4-TRIAZOL-
Isavuconazole RC 6
ISV66

1-(3-(5-(4-Cyanophenyl)thiazol-2-yl)-2-(2,5-difluorophenyl)-2-hydroxybutyl)-4-(1-(1-((methyl(3-((2-(methylamino)acetoxy)methyl)pyridin-2-yl)carbamoyl)oxy)ethoxy)ethyl)-1H-1,2,4-triazol-4-ium chloride
Isavuconazole RC 7
ISV67

1-(3-(BENZYLOXY)PHENYL)-2-BROMOPROPAN-1-ONE
CAS:20886-03-7
Metaraminol RC 1
MRN61

1-(3-(DIMETHYLAMINO)PROPYL)-1-(4'-FLUOROPHENYL)-1,3-DIHYDRO ISOBENZO FURAN-5-CARBOXAMIDE
CAS:64372-56-1
Citalopram EP Impurity A Citalopram USP RC A Esc
CTL01

1-(3-(DIMETHYLAMINO)PROPYL)-1-(4'-FLUOROPHENYL)-1,3-DIHYDRO ISOBENZO FURAN-5-CARBOXAMIDE
CAS:64372-56-1
EsCitalopram EP Impurity A Citalopram EP Impurity
ECT01

1-(3-Aminophenyl)-3-cyclopropyl-5-(2-fluoro-4-iodophenylamino)-6,8-dimethylpyrido[4,3-d]pyrimidine-2,4,7(1H,3H,6H)-trione
CAS:871701-87-0
Trametinib RC 4 Trametinib Desacetyl Impurity
TNB54

1-(3-Aminopropyl)-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofuran carbonitrile
CAS:62498-69-5
Citalopram Didesmethyl Impurity (Base) N,N-DiDesm
CTL19B

1-(3-Aminopropyl)-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofuran carbonitrile hydrobromide
CAS:1260887-85-1
Citalopram Didesmethyl Impurity (HBr) N,N-DiDesme
CTL19X

1-(3-Aminopropyl)-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofuran carbonitrile hydrochloride
CAS:1189694-81-2
Citalopram Didesmethyl Impurity (HCl) N,N-DiDesme
CTL19H

1-(3-Azido-2,3-dideoxy-ß-D-erythro-pentofuranosyl)-5-methylpyrimidine-2,4(1H,3H)-dione
CAS:30516-87-1
Zidovudine
ZDV00

1-(3-AZIDO-3-PHENYLPROPOXY)NAPHTHALENE
CAS:1776071-89-6
Dapoxetine RC 2
DXE62

1-(3-BENZOYLPHENYL)ETHANONE
CAS:66067-44-5
Ketoprofen EP Impurity A Ketoprofen USP RC D
KTP01

1-(3-BROMO-4-(HYDROXYMETHYL)PHENYL)ETHANONE
CAS:1418144-62-3
Siponimod RC 8
SNM68

1-(3-BROMO-4-METHYLPHENYL)ETHANONE
CAS:40180-80-1
Siponimod RC 1
SNM61

1-(3-BROMOPROPYL)-1,3-DIHYDRO-2H-BENZIMIDAZOL-2-ONE
CAS:103784-04-9
Domperidone RC 1
DPD61

1-(3-BROMOPROPYL)-3-(TRIFLUOROMETHYL)BENZENE
CAS:129254-76-8
Cinacalcet Impurity 9
CCC69

1-(3-BROMOPROPYL)-3-METHYLBENZENE
CAS:103324-39-6
Cinacalcet Impurity 8
CCC68

1-(3-BROMOPROPYL)-4-(3-CHLOROPHENYL)PIPERAZINE
CAS:142944-48-7
Trazodone Impurity 4
TZD64

1-(3-CARBOXY-2-PYRIDYL)-4-METHYL-2-PHENYLPIPERAZINE
CAS:61338-13-4
Mirtazapine Carboxylic Acid
MTZ30

1-(3-Chloro-2,3-dideoxy-ß-D-erythro-pentofuranosyl)-5-methylpyrimidine-2,4(1H,3H)-dione
CAS:25526-94-7
Zidovudine EP Impurity B Zidovudine USP RC B 3'
ZDV02

1-(3-Chloro-2-methylpropyl)-4-tert-pentylbenzene
Amorolfine Chloro Racemate
AMR54

1-(3-CHLORO-3-PHENYLPROPOXY)NAPHTHALENE
CAS:1445281-25-3
Dapoxetine RC 19
DXE79

1-(3-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indole-3-acetic acid
CAS:807614-94-4
Indomethacin EP Impurity E Indomethacin 3-Chloro
IDM05

1-(3-CHLOROPHENYL)-1,2-PROPANEDIONE
CAS:10557-17-2
Bupropion USP RC E Bupropion Dione Derivative (US
BPP05

1-(3-CHLOROPHENYL)-1-HYDROXY-2-PROPANONE
CAS:857233-13-7
Bupropion USP RC F
BPP06

1-(3-CHLOROPHENYL)-2-HYDROXY-1-PROPANONE
CAS:152943-33-4
Bupropion USP RC C
BPP03

1-(3-CHLOROPHENYL)-4-(3-CHLOROPROPYL)PIPERAZINE
CAS:39577-43-0
Nefazodone USP RC A
NFZ21B

1-(3-CHLOROPHENYL)-4-(3-CHLOROPROPYL)PIPERAZINE
CAS:39577-43-0
Trazodone BP Impurity F (Base) Trazodone USP RC F
TZD06B

1-(3-CHLOROPHENYL)-4-(3-CHLOROPROPYL)PIPERAZINE HYDROCHLORIDE
CAS:52605-52-4
Trazodone BP Impurity F (HCl) Trazodone USP RC F
TZD06H

1-(3-CHLOROPHENYL)-4-(3-CHLOROPROPYL)PIPERAZINE HYDROCHLORIDE
CAS:52605-52-4 (HCl) 57059-62-8 (x HCl)
Nefazodone USP RC A (HCl)
NFZ21H

1-(3-Chlorophenyl)-4-(3-hydroxypropyl)piperazine
CAS:32229-98-4
Trazodone EP Impurity I (Base) Trazodone Hydroxyp
TZD09B

1-(3-CHLOROPHENYL)-5-ISOPROPYLBIGUANIDE HYDROCHLORIDE
CAS:1071546-52-5
Proguanil USP RC G
PGN07H

1-(3-CHLOROPHENYL)PIPERAZINE
CAS:6640-24-0
Trazodone EP Impurity L (Base) Trazodone Impurity
TZD12B

1-(3-CHLOROPHENYL)PIPERAZINE
CAS:6640-24-0
Nefazodone 3-CPP Impurity (Base) Trazodone Impuri
NFZ53B

1-(3-CHLOROPHENYL)PIPERAZINE HCL
CAS:13078-15-4
Nefazodone 3-CPP Impurity (HCl)
NFZ53H

1-(3-CHLOROPHENYL)PIPERAZINE HYDROCHLORIDE
CAS:65369-76-8
Trazodone Chlorophenylpiperazine (HCl)
TZD51H

1-(3-Chloropropyl)-1, 3-Dihydro-2H-Benzimidazol-2-one
CAS:62780-89-6
Domperidone Chloropropyl Impurity
DPD50

1-(3-CYANO-2-PYRIDYL)-4-METHYL-2-PHENYLPIPERAZINE
CAS:61337-88-0
Mirtazapine Cyano Impurity
MTZ31

1-(3-CYANO-3,3-DIPHENYLPROPYL)-2-METHYL-1H-IMIDAZOLIUM PHOSPHATE
CAS:562091-56-9
Imidafenacin RC 3
IFN63

1-(3-Cyclohexylidene-3-phenylpropyl)piperidine
Benzhexol RC 2 (Base)
BZX62B

1-(3-Cyclohexylidene-3-phenylpropyl)piperidine hydrochloride
Benzhexol RC 2 (HCl)
BZX62H

1-(3-Dimethylaminopropyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzo furan-5-carbonitrile N-oxide
CAS:63284-72-0
EsCitalopram EP Impurity H (Base) Citalopram USP
ECT08B

1-(3-Dimethylaminopropyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzo furan-5-carbonitrile N-oxide HCl
CAS:62498-71-9
EsCitalopram EP Impurity H (HCl) Citalopram USP R
ECT08H

1-(3-Dimethylaminopropyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzo furan-5-carbonitrile-N-oxide
CAS:63284-72-0
Citalopram USP RC E (Base) Escitalopram EP Impuri
CTL25B

1-(3-Dimethylaminopropyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzo furan-5-carbonitrile-N-oxide HCl
CAS:62498-71-9
Citalopram USP RC E (HCl) Escitalopram EP Impurit
CTL25H

1-(3-Dimethylaminopropyl)-1-(phenyl)-5-phthalan-carbonitrile
CAS:1026009-77-7
Citalopram Desfluoro Impurity (Base) Desfluoro Ci
CTL52B

1-(3-Dimethylaminopropyl)-1-(phenyl)-5-phthalan-carbonitrile HBr
CAS:1026263-04-6
Citalopram Desfluoro Impurity (HBr) Desfluoro Cit
CTL52H

1-(3-Dimethylaminopropyl)-1-(phenyl)-5-phthalan-carbonitrile oxalate
CAS:1093072-86-6
Citalopram Desfluoro Impurity (Oxalate) Desfluoro
CTL52X

1-(3-ETHOXY-4-METHOXYPHENYL)-2-(METHYLSULFONYL)ETHANAMINE
CAS:253168-94-4
Apremilast EP Impurity H
APM08

1-(3-ETHYL-4-(HYDROXYMETHYL)PHENYL)ETHANONE
CAS:1378888-43-7
Siponimod RC 4
SNM64

1-(3-FLUOROBENZYL)-1H-PYRAZOLO[3,4-B]PYRIDINE-3-CARBOXIMIDAMIDE
CAS:2101651-50-5
Riociguat RC 5
RCG65

1-(3-Hydroxy-2-methylpropyl)-4-tert-pentylbenzene
Amorolfine Hydroxy Racemate
AMR56

1-(3-HYDROXY-4-METHOXYPHENYL)ETHANONE
CAS:6100-74-9
Diosmin EP Impurity A Diosmin BP Impurity A Acet
DSM01

1-(3-HYDROXYPHENYL)-2-(METHYLAMINO)ETHANONE
CAS:52093-42-2
Phenylephrine EP Impurity C Phenylephrine USP RC
PNP03B

1-(3-HYDROXYPHENYL)-2-(METHYLAMINO)ETHANONE HCL
CAS:94240-17-2
Phenylephrine EP Impurity C (HCl) Phenylephrine U
PNP03H

1-(3-HYDROXYPHENYL)ETHANONE
CAS:121-71-1
Etilefrine EP Impurity E 3-Hydroxyacetophenone
EFR05

1-(3-Hydroxypropyl)-3,7-dimethyl-3,7-dihydro-1H-purine-2,6-dione
CAS:59413-14-8
Pentoxifylline EP Impurity D
PTX04

1-(3-Hydroxypropyl)-5-(2-(2-(2-(2,2,2-trifluoroethoxy)phenoxy)ethylamino) propyl)indoline-7-carboxamide
CAS:160970-64-9
Silodosin Racemate
SLD60

1-(3-Hydroxypropyl)-5-(2-(2-(2-methoxyphenoxy)ethylamino)propyl)indoline-7-carboxamide
Silodosin Methoxy Analog
SLD67

1-(3-Hydroxypropyl)-5-[(2S)-({2-[2-[2-(2,2,2-trifluoroethoxy)phenoxy] ethyl} amino)propyl]indoline-7-carboxamide
CAS:2182279-45-2
Silodosin (S)-Isomer
SLD50

1-(3-METHOXYPHENYL)ETHANOL
CAS:23308-82-9
Rivastigmine EP Impurity G
RVS07

1-(3-METHOXYPHENYL)ETHANONE
CAS:586-37-8
Rivastigmine EP Impurity H
RVS08

1-(3-METHYL-1-PHENYL-1H-PYRAZOL-5-YL)PIPERAZINE
CAS:401566-79-8
Teneligliptin Impurity A
TGT61

1-(3-tert-Butyl-5-iodo-4-methoxyphenylpyrimidine-2,4(1H,3H)-dione
CAS:1132940-53-4
Dasabuvir 5-Iodo Impurity
DSB55

1-(4'-Fluorophenyl)-1-(3-(methylamino)propyl)-1,3-dihydroisobenzo furan-5-carbonitrile
CAS:62498-67-3
Citalopram EP Impurity D (Base) EsCitalopram USP
CTL04B

1-(4'-Fluorophenyl)-1-(3-(methylamino)propyl)-1,3-dihydroisobenzo furan-5-carbonitrile
CAS:62498-67-3
EsCitalopram EP Impurity D (Base) EsCitalopram US
ECT04B

1-(4'-Fluorophenyl)-1-(3-(methylamino)propyl)-1,3-dihydroisobenzo furan-5-carbonitrile hydrobromide
CAS:1188264-72-3
Citalopram EP Impurity D (HBr) EsCitalopram USP R
CTL04X

1-(4'-Fluorophenyl)-1-(3-(methylamino)propyl)-1,3-dihydroisobenzo furan-5-carbonitrile hydrobromide
CAS:1188264-72-3
EsCitalopram EP Impurity D (HBr) EsCitalopram USP
ECT64H

1-(4'-Fluorophenyl)-1-(3-(methylamino)propyl)-1,3-dihydroisobenzo furan-5-carbonitrile hydrochloride
CAS:97743-99-2
Citalopram EP Impurity D (HCl) EsCitalopram USP R
CTL04H

1-(4'-Fluorophenyl)-1-(3-(methylamino)propyl)-1,3-dihydroisobenzo furan-5-carbonitrile hydrochloride
CAS:97743-99-2
EsCitalopram EP Impurity D (HCl) EsCitalopram USP
ECT04H

1-(4'-FLUOROPHENYL)-1-(3-DIMETHYLAMINOPROPYL)-5-BROMOPHTHALANE
CAS:64169-39-7
Citalopram EP Impurity F (Base) Citalopram USP RC
CTL06B

1-(4'-FLUOROPHENYL)-1-(3-DIMETHYLAMINOPROPYL)-5-BROMOPHTHALANE HYDROBROMIDE
CAS:479065-02-6
Citalopram EP Impurity F (HBr) Citalopram USP RC
CTL66H

1-(4'-Fluorophenyl)-1-(3-dimethylaminopropyl)-5-bromophthalane hydrochloride
Citalopram EP Impurity F (HCl) Citalopram USP RC
CTL06H

1-(4'-Fluorophenyl)-1-(3-dimethylaminopropyl)-5-bromophthalane oxalate
Citalopram EP Impurity F (Oxalate) Citalopram USP
CTL06X

1-(4'-Fluorophenyl)-1-(3-dimethylaminopropyl)-5-chlorophthalane
CAS:64169-45-5
Citalopram EP Impurity E (Base) Citalopram USP RC
CTL05B

1-(4'-Fluorophenyl)-1-(3-dimethylaminopropyl)-5-chlorophthalane HBr
CAS:1332724-08-9
Citalopram EP Impurity E (HBr) Citalopram USP RC
CTL05H

1-(4'-Fluorophenyl)-1-(3-dimethylaminopropyl)-5-chlorophthalane oxalate
CAS:64169-46-6
Citalopram EP Impurity E (Oxalate) Citalopram USP
CTL05X

1-(4-(((2R,4S)-2-((1H-1,2,4-Triazol-1-yl)methyl)-2-(2,4-dichlorophenyl)-1,3-dioxolan-4-yl)methoxy)phenyl)-4-(4-nitrophenyl)piperazine
CAS:1437468-92-2
Itraconazole Nitrophenyl Impurity
ICZ46

1-(4-(((3R,5R)-5-((1H-1,2,4-Triazol-1-yl)methyl)-5-(2,4-difluorophenyl)-tetrahydrofuran-3-yl)methoxy)phenyl)-4-(4-(1-((2S,3S)-2-hydroxypentan-3-yl)-5-oxo-1H-1,2,4-triazol-4(5H)-yl)phenyl)piperazin-2-one
Posaconazole 2-Oxo
PSC52

1-(4-((1,4,8,11-Tetraazacyclotetradecan-1-yl)methyl)benzyl)-1,4,8,11-tetraazacyclotetradecane 1-oxide
Plerixafor N-Oxide
PXF50

1-(4-((1H-1,2,4-Triazol-1-yl)methyl)phenyl)hydrazine
CAS:144035-22-3
Rizatriptan Impurity 1 (Base)
RZT61B

1-(4-((1H-1,2,4-Triazol-1-yl)methyl)phenyl)hydrazine dihydrochloride
CAS:212248-62-9
Rizatriptan Impurity 1 (2HCl)
RZT61H

1-(4-((1H-1,2,4-Triazol-1-yl)methyl)phenyl)hydrazine monohydrochloride
CAS:154748-67-1
Rizatriptan Impurity 1 (HCl)
RZT61X

1-(4-((2S,3S,4S,5S)-4,5-Dihydroxy-6-(hydroxymethyl)-3-((3R,4S,6S)-3,4,5-trihydroxy-6-methyl-tetrahydro-2H-pyran-2-yloxy)-tetrahydro-2H-pyran-2-yloxy)-2,6-dihydroxyphenyl)-3-(4-hydroxyphenyl)propan-1-one
CAS:18916-17-1
Naringin dihydrochalcone
NRN60

1-(4-((3S,5S)-5-(Thiazolidine-3-carbonyl)pyrrolidin-3-yl)piperazin-1-yl)butane-1,3-dione
Teneligliptin Impurity D
TGT64

1-(4-(1-(3,5,5,8,8-PENTAMETHYL-5,6,7,8-TETRAHYDRONAPHTHALEN-2-YL)VINYL)PHENYL)ETHANONE
CAS:1349659-53-5
Bexarotene RC 1
BXR61

1-(4-(2-(5-Chloro-2-methoxybenzamido)ethyl)phenylsulfonyl)-3-((1R,2R)-2-hydroxycyclohexyl)urea
CAS:586414-93-9
Glyburide 2-Hydroxy trans-Isomer
GLB72

1-(4-(2-(5-Chloro-2-methoxybenzamido)ethyl)phenylsulfonyl)-3-((1r,4r)-4-hydroxycyclohexyl)urea
CAS:23155-00-2
Glyburide 4-Hydroxy trans-Isomer Glibenclamide 4-
GLB74

1-(4-(2-(5-Chloro-2-methoxybenzamido)ethyl)phenylsulfonyl)-3-((1S,3R)-3-hydroxycyclohexyl)urea
CAS:23074-02-4
Glyburide 3-Hydroxy cis-Isomer
GLB63

1-(4-(2-(5-Chloro-2-methoxybenzamido)ethyl)phenylsulfonyl)-3-((1S,3S)-3-hydroxycyclohexyl)urea
CAS:586414-84-8
Glyburide 3-Hydroxy trans-Isomer
GLB73

1-(4-(2-(5-Chloro-2-methoxybenzamido)ethyl)phenylsulfonyl)-3-((1s,4s)-4-hydroxycyclohexyl)urea
CAS:132054-81-0
Glyburide 4-Hydroxy cis-Isomer
GLB64

1-(4-(2-(Methylcarbamoyl)pyridin-4-yloxy)phenyl)urea
CAS:1129683-88-0
Sorafenib Urea Impurity
SRF43

1-(4-(2-Carboxypropan-2-yl)phenethyl)-4-(1-(2-ethoxyethyl)-1H-benzo[d]imidazol-2-yl)piperidine 1-Oxide
CAS:2069238-47-5
Bilastine N-Oxide
BLT50B

1-(4-(2-Hydroxy-3-(2-(2-methoxyphenoxy)ethylamino)propoxy)-9H-carbazol-9-yl)-3-(2-(2-methoxyphenoxy)ethylamino)propan-2-ol
CAS:1198090-73-1
Carvedilol EP Impurity A Carvedilol USP RC A
CVD01

1-(4-(2-Hydroxy-4-methoxybenzoyl)piperidin-1-yl)ethanone
CAS:64671-18-7
Risperidone RC 7
RSP77

1-(4-(2-METHYL-6-OXOPIPERIDIN-1-YL)PHENYL)-3-MORPHOLINO-5,6-DIHYDROPYRIDIN-2(1H)-ONE
CAS:2098457-93-1
Apixaban Impurity 41
APXX1

1-(4-(3-(4-(4-Fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)propoxy)-3-methoxyphenyl)ethanone
Iloperidone 6-Desfluoro 4-Fluoro
ILP53

1-(4-(3-(4-(6-(4-(6-Fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)benzo[d]isoxazol-3-yl)piperidin-1-yl)propoxy)-3-methoxyphenyl)ethanone
CAS:1375651-23-2
Iloperidone Dimer Impurity
ILP55

1-(4-(3-(4-(6-Fluorobenzo[d]isoxazol-3-yl)-5,6-dihydropyridin-1(2H)-yl)propoxy)-3-methoxyphenyl)ethanone
Iloperidone 3,4-Dehydropiperidine
ILP52

1-(4-(3-(4-(6-Fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)propoxy)-3-methoxyphenyl)ethanol N-oxide
CAS:1797883-91-0
Iloperidone Hydroxy N-Oxide
ILP57

1-(4-(3-(4-(6-Fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)propoxy)-3-methoxyphenyl)propan-1-one
CAS:133455-04-6
Iloperidone 1-Desacetyl 1-Propionyl
ILP51

1-(4-(3-(4-(6-Hydroxybenzo[d]isoxazol-3-yl)piperidin-1-yl)propoxy)-3-methoxyphenyl)ethanone
Iloperidone 6-Desfluoro 6-Hydroxy
ILP54

1-(4-(4-(((2S,4R)-2-(Bromomethyl)-2-(2,4-dichlorophenyl)-1,3-dioxolan-4-yl)methoxy)phenyl)piperazin-1-yl)ethanone
CAS:142128-65-2
Ketoconazole Impurity 2
KCZ62

1-(4-(4-(2,3-Dichlorophenyl)piperazin-1-yl)butyl)-7-hydroxy-3,4-dihydro quinolin-2(1H)-one
CAS:1797983-65-3
Aripiprazole N-Isomer
ARP50

1-(4-(4-Chlorophenyl)-2-(2,6-dichlorophenylsulfinyl)butyl)-1H-imidazole hydrochloride
Butoconazole Sulfoxide
BCZ51H

1-(4-(4-Chlorophenyl)-2-(2,6-dichlorophenylsulfonyl)butyl)-1H-imidazole
Butoconazole Sulfone
BCZ52

1-(4-(4-FLUOROBENZOYL)PIPERIDIN-1-YL)ETHANONE
CAS:25519-77-1
Risperidone RC 2
RSP72B

1-(4-(5-CYCLOHEXYL-1H-TETRAZOL-1-YL)BUTYL)-6-(4-(1-CYCLOHEXYL-1H-TETRAZOL-5-YL)BUTOXY)-3,4-DIHYDROQUINOLIN-2(1H)-ONE
CAS:865792-18-3
Cilostazol USP RC C
CSZ23

1-(4-(5-Fluoro-2-hydroxybenzoyl)piperidin-1-yl)ethanone
CAS:84162-84-5
Risperidone RC 17
RSP87

1-(4-(5-METHYL-2-OXOPIPERIDIN-1-YL)PHENYL)-3-MORPHOLINO-5,6-DIHYDROPYRIDIN-2(1H)-ONE
CAS:1686149-78-9
Apixaban Impurity 42
APXX2

1-(4-(benzyloxy)-2-hydroxy-3-propylphenyl)ethanone
CAS:76833-51-7
Tipelukast RC 5
TLK65

1-(4-(BENZYLOXY)PHENYL)-7-OXO-6-(4-(2-OXOPIPERIDIN-1-YL)PHENYL)-4,5,6,7-TETRAHYDRO-1H-PYRAZOLO[3,4-C]PYRIDINE-3-CARBOXAMIDE
CAS:1620494-31-6
Apixaban Impurity 20 O-Desmethyl O-Benzyl Apixaba
APX80

1-(4-(HYDROXYMETHYL)-3-VINYLPHENYL)ETHANONE
CAS:1418144-63-4
Siponimod RC 7
SNM67

1-(4-(METHOXYMETHOXY)PHENYL)-4-(4-NITROPHENYL)PIPERAZINE
CAS:1246819-65-7
Posaconazole Methoxy Nitro Impurity
PSC69

1-(4-(o-Toluidino)pyridin-3-ylsulfonyl)-3-isopropylurea
CAS:106944-62-1
Torsemide RC 6
TSM66

1-(4-(TRIFLUOROMETHOXY)PHENYL)THIOUREA
CAS:142229-74-1
Riluzole RC 1
RLZ71

1-(4-ACETYLPHENYL)-2-METHYLPROPAN-1-ONE
CAS:103931-20-0
Ibuprofen Impurity 13
IBP73

1-(4-AMINO-1H-IMIDAZO[4,5-C]QUINOLIN-1-YL)-2-METHYLPROPAN-2-OL
CAS:112668-45-8
Imiquimod Impurity 1
IQM61

1-(4-AMINO-5-(ETHYLSULFONYL)-2-METHOXYPHENYL)-2-(1-ETHYLPIPERIDIN-3-YL)ETHANONE
Amisulpride RC 4
ASD54

1-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-4-[(tetrahydro-2-furanyl) carbonxyl] piperazine hydrochloride
CAS:63590-64-7
Prazosin Tetrahydro Impurity
PRZ31H

1-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-4-[(tetrahydro-2-furanyl) carbonxyl] piperazine hydrochloride dihydrate
CAS:70024-40-7
Terazosin HCl dihydrate
TRZ00H

1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)-4-(5-hydroxypentanoyl)piperazine
CAS:109678-71-9
Terazosin EP Impurity F (Base)
TRZ06B

1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)-4-(5-hydroxypentanoyl)piperazine HCl
Terazosin EP Impurity F (HCl)
TRZ06H

1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)-4-(furan-2-ylcarbonyl) piperazine hydrochloride
CAS:19237-84-4
Prazosin (HCl) Terazosin EP Impurity K (HCl)
PRZ00H

1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)-4-(furan-2-ylcarbonyl)piperazine
Prazosin (Base) Terazosin EP Impurity K
PRZ00B

1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)-4-(furan-2-ylcarbonyl)piperazine HCl
CAS:19237-84-4
Terazosin EP Impurity K (HCl) Prazosin HCl
TRZ11H

1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)-4-[(2RS)-2,3-dihydro-1,4-benzodioxin-2-ylcarbonyl]piperazine
CAS:74191-85-8
Doxazosin
DXZ00B

1-(4-AMINO-6,7-DIMETHOXYQUINAZOLIN-2-YL)-4-[(2RS)-2,3-DIHYDRO-1,4-BENZODIOXIN-2-YLCARBONYL]PIPERAZINE METHANESULPHONATE
CAS:77883-43-3
Doxazosin mesylate
DXZ00M

1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)-4-[(2RS)-2-hydroxypentanoyl] piperazine
CAS:152551-75-2
Terazosin EP Impurity J
TRZ10

1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)-4-[[(2RS,5S)-5-methyltetrahydro furan-2-yl]carbonyl]piperazine
CAS:1177261-85-6
Terazosin EP Impurity I
TRZ09

1-(4-Amino-6-hydroxy-7-methoxyquinazolin-2-yl)-4-[[(2RS)-tetrahydrofuran-2-yl]carbonyl]piperazine
CAS:105356-89-6
Terazosin EP Impurity G 6-O-Desmethyl Terazosin
TRZ07

1-(4-Amino-7-hydroxy-6-methoxyquinazolin-2-yl)-4-[[(2RS)-tetrahydrofuran-2-yl]carbonyl]piperazine
CAS:105356-90-9
Terazosin EP Impurity H 7-O-Desmethyl Terazosin
TRZ08

1-(4-Aminophenyl)-3-chloro-5,6-dihydropyridin-2(1H)-one
Apixaban Impurity 39
APX99

1-(4-AMINOPHENYL)-3-MORPHOLINO-5,6-DIHYDROPYRIDIN-2(1H)-ONE
CAS:1267610-26-3
Apixaban Impurity 13
APX73

1-(4-AMINOPHENYL)-3-MORPHOLINOPYRIDIN-2(1H)-ONE
Apixaban Impurity 2
APX62

1-(4-Benzyloxy-3-hydroxymethyl-phenyl)-2-(tert-butylamino)ethanol
CAS:56796-66-8
Salbutamol EP Impurity I 4-Benzyl Albuterol
SAB09B

1-(4-BROMO-2-(HYDROXYMETHYL)PHENYL)-4-(DIMETHYLAMINO)-1-(4-FLUOROPHENYL)BUTAN-1-OL HYDROCHLORIDE
CAS:508169-73-1
Citalopram Impurity 2
CTL62H

1-(4-BROMOBUTYL)-3,4-DIHYDRO-7-HYDROXY-2(1H)-QUINOLINONE
CAS:1424857-68-0
Aripiprazole N-Bromobutyl Impurity
ARP49

1-(4-Bromophenyl)-4-(4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl)butan-1-one
Haloperidol Impurity 2
HPR52B

1-(4-Chloro-10,11-dihydro-5H-dibenzo[a,d][7]annulen-5-yl)-1H-imidazole nitrate
Eberconazole Nitrate 2-Deschloro Impurity
EBC52N

1-(4-Chloro-2-methyl-10,11-dihydro-5H-dibenzo[a,d][7]annulen-5-yl)-1H-imidazole nitrate
Eberconazole Nitrate 2-Methyl Analog
EBC62N

1-(4-Chloro-3-(3-chloro-5-(trifluoromethyl)pyridin-2-yloxy)phenyl)-3-(2,6-difluorobenzoyl)urea
CAS:86811-58-7
Fluazuron
FZR00

1-(4-Chloro-3-(trifluoromethyl)phenyl)-3-(2-fluoro-4-(2-(methylcarbamoyl)pyridin-4-yloxy)phenyl)urea hydrate
CAS:1019206-88-2
Regorafenib (Monohydrate)
RGA00H

1-(4-CHLORO-3-(TRIFLUOROMETHYL)PHENYL)-3-(4-HYDROXYPHENYL)UREA
CAS:1129683-83-5
Sorafenib RC 6
SRF66

1-(4-Chlorobenzoyl)-5-hydroxy-2-methyl-1H-indole-3-acetic acid
CAS:2504-32-7
Indomethacin O-Desmethyl Impurity
IDM57

1-(4-CHLOROBENZOYL)-5-METHOXY-2-METHYL-1-[2-(4-MORPHOLINYL)-2-OXOETHYL]-1H-INDOLE
CAS:2854-32-2
Indomethacin Morpholinylamide Impurity
IDM56

1-(4-CHLOROBENZOYL)-5-METHOXY-2-METHYL-1H-INDOLE-3-ACETIC ACID
CAS:53-86-1
Indomethacin
IDM00

1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-Indole-3-acetic acid 2-(4-chlorobenzoyl)-2-(4-methoxyphenyl)hydrazide
CAS:402849-25-6
Indomethacin EP Impurity J Indomethacin Diamide
IDM10

1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-Indole-3-acetic acid ethyl ester
CAS:16401-99-3
Indomethacin EP Impurity I Indomethacin Ethyl Est
IDM09

1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indole-3-acetic acid methyl ester
CAS:1601-18-9
Indomethacin EP Impurity H Indomethacin Methyl Es
IDM08

1-(4-Chlorobenzyl)-3-[(2RS)-2-[(4-chlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl] imidazolium chloride
Econazole EP Impurity C Econazole USP RC C
ECZ03

1-(4-CHLOROBUTYL)-7-HYDROXYQUINOLIN-2(1H)-ONE
Brexpiprazole Impurity 6
BRX66

1-(4-Chlorophenyl)-2-((3-chloropropyl)(methyl)amino)ethanone
Lofepramine RC 1
LFP61B

1-(4-Chlorophenyl)-2-((3-hydroxypropyl)(methyl)amino)ethanone
Lofepramine RC 2
LFP62B

1-(4-Chlorophenyl)-2-[[3-(10,11-dihydro-5H-dibenz[b,f]azepin-5-yl)propyl]methylamino]ethanone
CAS:23047-25-8
Lofepramine
LFP00B

1-(4-Chlorophenyl)-2-[[3-(10,11-dihydro-5H-dibenz[b,f]azepin-5-yl)propyl]methylamino]ethanone hydrochloride
CAS:26786-32-3
Lofepramine HCl
LFP00H

1-(4-CHLOROPHENYL)-3-CYANOGUANIDINE
CAS:1482-62-8
Proguanil EP Impurity E Proguanil USP RC E
PGN05B

1-(4-CHLOROPHENYL)-4-(3-CHLOROPROPYL)PIPERAZINE
CAS:6323-14-4
Nefazodone 4-Chlorophenyl Impurity
NFZ54B

1-(4-CHLOROPHENYL)-5-(1-METHYLETHYL)BIGUANIDE HYDROCHLORIDE
CAS:637-32-1
Proguanil Hydrochloride
PGN00H

1-(4-Chlorophenyl)-5-[6-[(cyanocarbamimidoyl)amino]hexyl]biguanide
CAS:152504-08-0
Chlorhexidine Digluconate EP Impurity A Chlorhexi
CXG01

1-(4-Chlorophenyl)-5-[6-[(cyanocarbamimidoyl)amino]hexyl]biguanide
CAS:152504-08-0
Chlorhexidine Dihydrochloride EP Impurity A Chlor
CXH01

1-(4-Chlorophenyl)-5-[6-[[(phenylcarbamimidoyl)carbamimidoyl]amino]hexyl] biguanide
CAS:152504-12-6
Chlorhexidine Digluconate EP Impurity M
CXG13

1-(4-CHLOROPHENYL)-5-[6-[[4-[(4-CHLOROPHENYL)AMINO]-6-[(1S,2R,3R,4R)-1,2,3,4,5-PENTAHYDROXYPENTYL]-1,3,5-TRIAZIN-2-YL]AMINO]HEXYL]BIGUANIDE D-GLUCONIC ACID SALT
Chlorhexidine Digluconate EP Impurity J
CXG10G

1-(4-Chlorophenyl)-6-fluoro-7-(4-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
Difloxacin EP Impurity C
DXN03

1-(4-CHLOROPHENYL)ETHANONE
CAS:99-91-2
Lofepramine RC 3
LFP63

1-(4-Cyano-3-(trifluoromethyl)phenyl)-3-(3-fluoro-4-(methylcarbamoyl)phenyl)thiourea
CAS:1798807-39-2
Enzalutamide Impurity 13
EZL73

1-(4-Ethoxy-3-(1-methyl-3-propyl-7-thioxo-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)phenyl)-2-(4-(2-hydroxyethyl)piperazin-1-yl)ethanone
CAS:1159977-47-5
Sildenafil RC 37 Hydroxythio Acetildenafil
SDFC7

1-(4-Ethoxybenzyl)-2-chlorobenzene
CAS:1662702-90-0
Dapagliflozin RC 36 Dapagliflozin Despyranose Imp
DPG96

1-(4-FLUOROBENZYL)-1H-PYRAZOLO[3,4-B]PYRIDINE-3-CARBOXIMIDAMIDE
Riociguat RC 6 (Base)
RCG66B

1-(4-FLUOROBENZYL)-1H-PYRAZOLO[3,4-B]PYRIDINE-3-CARBOXIMIDAMIDE HYDROCHLORIDE
Riociguat RC 6 (HCl)
RCG66H

1-(4-FLUOROBENZYL)-3-(4-ISOBUTOXYBENZYL)-1-(1-METHYLPIPERIDIN-4-YL)UREA
CAS:706779-91-1
Pimavanserin (Base)
PVN00B

1-(4-FLUOROBENZYL)-3-(4-ISOBUTOXYBENZYL)-1-(PIPERIDIN-4-YL)UREA
CAS:639863-77-7
Pimavanserin RC 7 N-Desmethyl Pimavanserin
PVN67

1-(4-FLUOROBENZYL)-3-(4-ISOBUTOXYBENZYL)UREA
CAS:1388858-78-3
Pimavanserin RC 8
PVN68

1-(4-Fluorobenzyl)-N-(1-(4-methoxyphenethyl)piperidin-4-yl)-1H-benzo[d]imidazol-2-amine
CAS:68844-77-9
Astemizole
AMZ00

1-(4-FLUOROPHENYL)-1,3,8-TRIAZASPIRO[4.5]DECAN-4-ONE
CAS:58012-16-1
Fluspirilene RC 1
FLS61

1-(4-FLUOROPHENYL)-4-(4-HYDROXY-4-PHENYLPIPERIDIN-1-YL)BUTAN-1-ONE
CAS:12/4/3109
Haloperidol EP Impurity A Dechloro Haloperidol
HPR01B

1-(4-Fluorophenyl)-4-[(6bR,10aS)-2,3,6b,9,10,10a-hexahydro-1H-pyrido[3,44,5]pyrrolo[1,2,3-de]quinoxalin-8(7H)-yl]-1-butanone
CAS:313368-82-0
Lumateperone N-Desmethyl
LMR50

1-(4-Fluorophenyl)-4-[(6bR,10aS)-3-methyl-2,3,6b,9,10,10a-hexahydro-11H-pyrido[3`,4`4,5]pyrrolo[1,2,3-de]quinoxalin-8(7H)-yl]butan-1-one
CAS:313368-91-1
Lumateperone
LMR00

1-(4-FLUOROPHENYL)-4-OXOCYCLOHEXANECARBONITRILE
CAS:56326-98-8
Levocabastine EP Impurity H
LVC08

1-(4-FLUOROPHENYL)-N-[(4-FLUOROPHENYL)METHYL]METHANIMINE
CAS:428819-12-9
Pimavanserin RC 9
PVN69

1-(4-FLUOROPHENYL)ETHANONE
CAS:403-42-9
Haloperidol Decanoate EP Impurity L 4'-Fluoroacet
HPD12

1-(4-fluorophenyl)pyridin-2(1H)-one
CAS:60532-42-5
Pirfenidone RC 1
PFD61

1-(4-HYDROXY-2,6-DIMETHOXYPHENYL)-4-(PYRROLIDIN-1-YL)BUTAN-1-ONE
CAS:79967-07-0
Buflomedil EP Impurity B
BFM02

1-(4-Hydroxy-2-(2-hydroxy-3-(propylamino)propoxy)phenyl)-3-phenylpropan-1-one
CAS:86384-09-0
Propafenone 4-Hydroxy Impurity (Base)
PRP51B

1-(4-Hydroxy-2-(2-hydroxy-3-(propylamino)propoxy)phenyl)-3-phenylpropan-1-one hydrochloride
CAS:86383-31-5
Propafenone 4-Hydroxy Impurity (HCl)
PRP51H

1-(4-Hydroxy-2-(3-phenylpropanoyl)phenoxy)-3-(propylamino)propan-2-yl hydrogen sulfate
CAS:1346598-57-9
Propafenone RC 2
PRP62

1-(4-HYDROXY-3-HYDROXYMETHYLPHENYL)-2-(TERT-BUTYLBENZYLAMINO)ETHANOL
CAS:24085-03-8
Salbutamol EP Impurity E N-Benzyl Salbutamol N-
SAB05B

1-(4-HYDROXY-3-HYDROXYMETHYLPHENYL)-2-(TERT-BUTYLBENZYLAMINO)ETHANONE
CAS:64092-10-0
Salbutamol EP Impurity G N-Benzyl Salbutamone
SAB07B

1-(4-Hydroxy-3-hydroxymethylphenyl)-2-(tert-butylbenzylamino)ethanone HCl
CAS:24085-08-3
Salbutamol EP Impurity G (HCl) N-Benzyl Salbutamo
SAB07H

1-(4-HYDROXY-3-METHYLPHENYL)-2-[[6-(4-PHENYLBUTOXY)HEXYL]AMINO]ETHANOL
CAS:1391054-40-2
Salmeterol EP Impurity F (Base) Salmeterol Deoxy
SAL06B

1-(4-Hydroxy-3-methylphenyl)-2-[[6-(4-phenylbutoxy)hexyl]amino]ethanol formate
Salmeterol EP Impurity F (Formate) Salmeterol Deo
SAL06F

1-(4-HYDROXY-6,7-DIMETHOXYQUINAZOLIN-2-YL)-4-[[(2RS)-TETRAHYDROFURAN-2-YL]CARBONYL]PIPERAZINE
CAS:1177261-73-2
Terazosin EP Impurity B Terazosin USP RC B Teraz
TRZ02

1-(4-Hydroxybenzyl)-3-(4-isobutoxybenzyl)-1-(1-methylpiperidin-4-yl)urea
Pimavanserin RC 10
PVN70

1-(4-Hydroxyphenyl)-2-(1-phenoxypropan-2-ylamino)propan-1-one
CAS:60640-80-4
Isoxsuprine EP Impurity B
ISX02

1-(4-HYDROXYPHENYL)-2-METHOXYETHANONE
CAS:32136-81-5
Metoprolol RC 2
MTP62

1-(4-HYDROXYPHENYL)-5-METHYLPYRIDIN-2(1H)-ONE
CAS:851518-71-3
Pirfenidone N-(4-Hydroxyphenyl)
PFD52

1-(4-HYDROXYPHENYL)ETHANONE
CAS:99-93-4
Paracetamol EP Impurity E
PCM05

1-(4-HYDROXYPHENYL)ETHANONE OXIME
CAS:34523-34-7
Paracetamol EP Impurity G
PCM07

1-(4-HYDROXYPHENYL)PYRIDIN-2(1H)-ONE
CAS:859538-51-5
Pirfenidone Desmethyl N-(4-Hydroxyphenyl)
PFD56

1-(4-HYDROXYPHENYL)PYRIDIN-2(1H)-ONE
CAS:2251047-36-4
Pirfenidone 5-Methylpyridin-2-one
PFD54

1-(4-Methoxy-2-nitrophenoxy)benzene
CAS:84594-95-6
Iguratimod Impurity 5
ITM65

1-(4-METHOXYPHENYL)-4-(4-AMINOPHENYL)PIPERAZINE
CAS:74852-62-3
Itraconazole Methoxy Amino Impurity
ICZ44

1-(4-Methoxyphenyl)-4-(4-hydrazinylcarbonylaminophenyl)piperazine
Itraconazole Methoxy Hydrazinyl Impurity
ICZ64

1-(4-METHOXYPHENYL)-4-(4-NITROPHENYL)PIPERAZINE
Itraconazole Methoxy Nitro Impurity
ICZ34

1-(4-Methoxyphenyl)-4-(4-phenoxycarbonylaminophenyl)piperazine
Itraconazole Methoxy Phenoxy Impurity
ICZ54

1-(4-METHOXYPHENYL)-6-(4-(2-METHYL-6-OXOPIPERIDIN-1-YL)PHENYL)-7-OXO-4,5,6,7-TETRAHYDRO-1H-PYRAZOLO[3,4-C]PYRIDINE-3-CARBOXAMIDE
CAS:2098457-92-0
Apixaban Impurity 33 BMS-778960-01
APX93

1-(4-METHOXYPHENYL)-6-(4-(5-METHYL-2-OXOPIPERIDIN-1-YL)PHENYL)-7-OXO-4,5,6,7-TETRAHYDRO-1H-PYRAZOLO[3,4-C]PYRIDINE-3-CARBOXAMIDE
CAS:1686149-74-5
Apixaban 5-Methyl Impurity Apixaban Impurity B B
APX55

1-(4-METHOXYPHENYL)-7-OXO-6-(4-(2-OXOPIPERIDIN-1-YL)PHENYL)-6,7-DIHYDRO-1H-PYRAZOLO[3,4-C]PYRIDINE-3-CARBOXYLIC ACID
Apixaban Impurity 31
APX91

1-(4-METHYLBENZYL)-1,4,8,11-TETRAAZACYCLOTETRADECANE
CAS:351472-73-6
Plerixafor Impurity 5
PXF65

1-(4-NITROPHENYL)PIPERIDIN-2-ONE
CAS:38560-30-4
Apixaban Impurity 36
APX96

1-(4-tert-Pentylphenyl)butan-2-ol
Amorolfine 2-Hydroxy Impurity
AMR52

1-(4-tert-Pentylphenyl)propan-1-one
CAS:106614-66-8
Amorolfine EP Impurity F
AMR06

1-(5,6-Dihydronaphthalen-1-yl)ethanamine
CAS:1824506-44-6
Levobunolol RC 1
LBN61

1-(5,6-DIHYDRONAPHTHALEN-1-YL)ETHANONE
CAS:802918-49-6
Cinacalcet Impurity 4
CCC64

1-(5-(2-FLUOROPHENYL)-1-(PYRIDIN-3-YLSULFONYL)-1H-PYRROL-3-YL)-N-((5-(2-FLUOROPHENYL)-1-(PYRIDIN-3-YLSULFONYL)-1H-PYRROL-3-YL)METHYL)-N-METHYLMETHANAMINE
Vonoprazan Dimer Impurity
VPZ56B

1-(5-(Benzyloxy)-2-(2-hydroxy-3-(propylamino)propoxy)phenyl)-3-phenylpropan-1-one
CAS:200434-70-4
Propafenone 5-Benzyloxy
PRP52

1-(5-(Phenylthio)-1H-benzo[d]imidazol-2-yl)hydrazine
CAS:53065-28-4
Fenbendazole Hydrazine Impurity (Base)
FDZ50B

1-(5-(Phenylthio)-1H-benzo[d]imidazol-2-yl)hydrazine hydrochloride
CAS:1448346-29-9
Fenbendazole Hydrazine Impurity (HCl)
FDZ50H

1-(5-AMINO-2-HYDROXYPHENYL)ETHANONE
CAS:50-80-6
Acebutolol Impurity 1
ABT51B

1-(5-BENZOYLTHIOPHEN-2-YL)ETHANONE
CAS:5912-44-7
Tiaprofenic Acid EP Impurity B
TPF02

1-(5-Chlorobenzo[c][1,2,5]thiadiazol-4-yl)-3-(2,2-diethoxyethyl)guanidine
CAS:1391053-77-2
Tizanidine RC 1
TZN61

1-(5-HYDROXY-2-(2-HYDROXY-3-(PROPYLAMINO)PROPOXY)PHENYL)-3-PHENYLPROPAN-1-ONE HYDROCHLORIDE
CAS:86384-10-3
Propafenone 5-Hydroxy (HCl)
PRP59H

1-(5-METHOXY-1-(1-(5-METHOXY-1H-BENZO[D]IMIDAZOL-2-YL)-3,5-DIMETHYL-4-OXO-1,4-DIHYDROPYRIDINE-2-CARBONYL)-1H-BENZO[D]IMIDAZOL-2-YL)-3,5-DIMETHYL-4-OXO-1,4-DIHYDROPYRIDINE-2-CARBOXYLIC ACID
Esomeprazole Pyridone Dimer Acid Omeprazole Pyrid
EOM54A

1-(5-METHOXY-1H-BENZO[D]IMIDAZOL-2-YL)-2,3,5-TRIMETHYLPYRIDIN-4(1H)-ONE
Esomeprazole Trimethyl-4-Pyridone Impurity
EOM51

1-(5-Methoxy-1H-benzo[d]imidazol-2-yl)-3,5-dimethyl-4-oxo-1,4-dihydropyridine-2-carboxylic acid
CAS:1227380-90-6
Omeprazole Pyridone Acid Esomeprazole Dihydro Pyr
OMP40A

1-(5-Methoxy-1H-benzo[d]imidazol-2-yl)-3,5-dimethyl-4-oxo-1,4-dihydropyridine-2-carboxylic acid
CAS:1227380-90-6
Esomeprazole Impurity H (Acid) Omeprazole Pyridon
EOM40A

1-(5-Methoxy-1H-benzo[d]imidazol-2-yl)-3,5-dimethyl-4-oxo-1,4-dihydropyridine-2-carboxylic acid ammonium salt
Esomeprazole Impurity H (NH4) Omeprazole Pyridone
EOM40M

1-(5-Methoxy-1H-benzo[d]imidazol-2-yl)-3,5-dimethyl-4-oxo-1,4-dihydropyridine-2-carboxylic acid sodium salt
Esomeprazole Impurity H (Na) Omeprazole Pyridone
EOM40N

1-(5-O-Acetyl-ß-D-ribofuranosyl)-1H-1,2,4-triazole-3-carboxamide
CAS:58151-87-4
Ribavirin EP Impurity F 5'-O-Acetyl Ribavirin
RBV06

1-(5-O-Benzoyl-2,3-dideoxy-ß-D-glycero-pent-2-enofuranosyl)-5-methylpyrimidine-2,4(1H,3H)-dione
CAS:122567-97-9
Stavudine EP Impurity I
STV09

1-(5-O-Benzoyl-ß-D-ribofuranosyl)-1H-1,2,4-triazole-3-carboxamide
CAS:58151-90-9
Ribavirin RC 1
RBV61

1-(6,7,9,10-Tetrahydro-6,10-methano-8H-pyrazino[2,3-h][3]benzazepin-8-carboxylate) ß-D-glucopyranuronic acid
CAS:535920-98-0
Varenicline Carbamoyl Glucuronide
VCT61

1-(6,7,9,10-Tetrahydro-6,10-methano-8H-pyrazino[2,3-h][3]benzazepin-8-carboxylate) ß-D-glucopyranuronic acid methyl ester
Varenicline Carbamoyl Glucuronide Methyl Ester
VCT62

1-(6,7,9,10-TETRAHYDRO-6,10-METHANO-8H-PYRAZINO[2,3-H][3]BENZAZEPIN-8-YL)ETHANONE
CAS:1213781-59-9
Varenicline N-Acetyl
VCT66

1-(6-((6-ACETYL-8-CYCLOPENTYL-5-METHYL-7-OXO-7,8-DIHYDROPYRIDO[2,3-D]PYRIMIDIN-2-YL)AMINO)PYRIDIN-3-YL)PIPERAZINE 1-OXIDE
CAS:2174002-29-8
Palbociclib N-Oxide Palbociclib Piperazine N-Oxid
PBC59B

1-(6-(TRIFLUOROMETHOXY)BENZO[D]THIAZOL-2-YL)UREA
CAS:1456696-94-8
Riluzole RC 4
RLZ74

1-(6-Amino-9-(((2S,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)methyl)-9H-purin-2-yl)-N-methyl-1H-pyrazole-4-carboxamide
CAS:313348-27-5
Regadenoson
RGD00

1-(6-Amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)-9H-purin-2-yl)-1H-pyrazole-4-carboxylic acid
CAS:313348-29-7
Regadenoson Impurity 3 Regadenoson Acid
RGD53

1-(6-Amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)-9H-purin-2-yl)-N,N-dimethyl-1H-pyrazole-4-carboxamide
CAS:313348-31-1
Regadenoson Impurity 2 N-Methyl Regadenoson
RGD52

1-(6-Amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)-9H-purin-2-yl)-N-ethyl-1H-pyrazole-4-carboxamide
Regadenoson Impurity 20 Regadenoson N-Ethyl Analo
RGD70

1-(6-Amino-9-((2S,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)-9H-purin-2-yl)-N-methyl-1H-pyrazole-4-carboxamide
CAS:2015222-31-6
Regadenoson Impurity 4 1-epi Regadenoson
RGD54

1-(6-Amino-9H-purin-9-yl)propan-2-ol
CAS:14047-26-8
Tenofovir RC 8
TNF98

1-(6-Aminohexyl)-5-(4-chlorophenyl)biguanide
CAS:152504-09-1
Chlorhexidine Digluconate EP Impurity G (Base)
CXG07B

1-(6-Aminohexyl)-5-(4-chlorophenyl)biguanide dihydrochloride
CAS:165678-61-5
Chlorhexidine Digluconate EP Impurity G (2HCl)
CXG07H

1-(6-CHLORO-9H-CARBAZOL-2-YL)ETHANONE
CAS:92841-22-0
Carprofen EP Impurity D
CRN04

1-(6-METHOXYNAPHTHALEN-2-YL)ETHANONE
CAS:3900-45-6
Naproxen EP Impurity L Naproxen USP RC L
NPX12

1-(6-METHYLPYRIDIN-3-YL)-2-(4-(METHYLSULFONYL)PHENYL)ETHANONE
CAS:221615-75-4
Etoricoxib Impurity 4
ECX64

1-(6-METHYLPYRIDIN-3-YL)-2-(4-(METHYLTHIO)PHENYL)ETHANONE
CAS:221615-72-1
Etoricoxib Impurity 5
ECX65

1-(9-Acetyl-6-chloro-9H-carbazol-2-yl)-2-chloropropan-1-one
CAS:114041-34-8
Carprofen RC 1
CRN61

1-(9H-Carbazol-4-yloxy)-3-(benzyl(2-(2-methoxyphenoxy) ethyl)amino)propan-2-ol
CAS:72955-94-3
Carvedilol EP Impurity C Carvedilol USP RC C N-B
CVD03

1-(9H-Carbazol-4-yloxy)-3-[[2-(2-methoxyphenoxy)ethyl](1-methylethyl)amino]-2-propanol
CAS:1246819-01-1
Carvedilol N-Isopropyl Impurity
CVD51

1-(9H-Carbazol-4-yloxy)-3-[4-[2-hydroxy-3-[[2-(2-methoxyphenoxy)ethyl]amino]propoxy]-9H-carbazol-9- yl]propan-2-ol
CAS:1391052-16-6
Carvedilol EP Impurity D
CVD04

1-(9H-FLUOREN-9-YL)-5-HYDROXYPENTAN-1-ONE
Lomitapide FHP Impurity
LPD53

1-(Acetyloxy)ethyl (6R,7R)-3-[(carbamoyloxy)methyl]-7-[[(Z)-2-(furan-2-yl)-2-(methoxyimino)acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylate
CAS:123458-61-7
Cefuroxime Axetil EP Impurity A Cefuroxime Axeti
CRA01

1-(AMINOMETHYL)CYCLOHEXANEACETIC ACID
CAS:60142-96-3
Gabapentin
GBP00

1-(Benzo[d]isothiazol-3-yl)piperazine
CAS:87691-87-0
Lurasidone BIP Impurity Ziprasidone EP Impurity A
LRS45

1-(BENZOFURAN-2-YL)BUTAN-1-OL
CAS:1342520-64-2
Amiodarone RC 10
ADR70

1-(Benzofuran-2-yl)ethanone 2-Acetylbenzofuran
CAS:1646-26-0
Benzbromarone RC 4
BZB64

1-(bis(4-Cyanophenyl)methyl)-1H-1,2,4-triazole-4-oxide
Letrozole N-Oxide
LTZ50

1-(BROMOMETHYL)-3,5-DIFLUOROBENZENE
CAS:141776-91-2
Entrectinib RC 4
ETX64

1-(BROMOMETHYL)-3,5-DIMETHYLBENZENE
CAS:27129-86-8
Anastrozole Impurity 2
ANS62

1-(BROMOMETHYL)-3-(TRIFLUOROMETHOXY)BENZENE
CAS:159689-88-0
Pretomanid Impurity 5
PTD55

1-(BROMOMETHYL)-4-(TRIFLUOROMETHOXY)BENZENE
CAS:50824-05-0
Pretomanid Impurity 4
PTD54

1-(But-3-enyl)-4-(2,3-dichlorophenyl)piperazine
CAS:1424857-93-1
Aripiprazole Impurity 2
ARP62

1-(Chloroacetyl)-2-pyrrolidinecarbonitrile
CAS:274901-37-0
Vildagliptin Chloroacetyl Nitrile Racemate
VDG59

1-(Chloromethyl)-1-methyl-4-(2-methyl-10H-thieno[2,3-b]-[1,5]benzodiazepin-4-yl)piperazin-1-ium chloride
CAS:719300-59-1
Olanzapine EP Impurity C Olanzapine BP Impurity C
OLZ03

1-(CHLOROMETHYL)-3-PHENOXYBENZENE
CAS:53874-66-1
Permethrin EP Impurity E
PMR05

1-(Chroman-2-yl)-2-((2-(6-fluorochroman-2-yl)-2-hydroxyethyl)amino)ethanol
CAS:129101-34-4
Nebivolol USP RC E (Base) Monodesfluoro Nebivolol
NBV25B

1-(CHROMAN-2-YL)-2-((2-(6-FLUOROCHROMAN-2-YL)-2-HYDROXYETHYL)AMINO)ETHANOL HYDROCHLORIDE
Nebivolol USP RC E (HCl) Monodesfluoro Nebivolol
NBV25H

1-(Chroman-2-yl)-2-((2-(chroman-2-yl)-2-hydroxyethyl)amino)ethanol
CAS:129101-33-3
Nebivolol Didesfluoro Impurity
NBV75

1-(CYANO-(4-METHOXYPHENYL)METHYL)CYCLOHEXANOL
CAS:93413-76-4
Venlafaxine Cyano Impurity Venlafaxine Hydroxy Ni
VLF36

1-(Di(aziridin-1-yl)phosphorothioyl)aziridine
CAS:52-24-4
Thiotepa
THT00

1-(DICYCLOPROPYLMETHYL)-3-(2-HYDROXYETHYL)UREA
CAS:54187-44-9
Rilmenidine EP Impurity A
RMD01

1-(Dimethylamino)-2-(pyridin-4-yl)pent-1-en-3-one
CAS:78504-62-8
Milrinone RC 5
MLR55

1-(Diphenylmethyl)-4-[(1RS,3E)-4-phenyl-1-[(E)-2-phenylethenyl] but-3-enyl] piperazine
CAS:1199751-98-8
Cinnarizine EP Impurity D
CNR04

1-(Diphenylmethyl)-4-[(3-methylphenyl)methyl]piperazine
CAS:16896-82-5
Meclizine EP Impurity E Meclozine EP Impurity E
MCL05

1-(DIPHENYLMETHYL)PIPERAZINE
CAS:841-77-0
Cinnarizine EP Impurity A N-Desmethyl Cyclizine
CNR01

1-(ETHOXYCARBONYL)PIPERIDINE-4-CARBOXYLIC ACID
CAS:118133-15-6
Risperidone RC 26
RSP96

1-(Ethylamino)-3-(naphthalen-1-yloxy)propan-2-ol
CAS:2111-24-2
Propranolol RC 2
PPN62

1-(Furan-2-ylcarbonyl)piperazine
CAS:40172-95-0
Prazosin EP Impurity D Prazosin USP RC D Terazos
PRZ04

1-(Furan-2-ylcarbonyl)piperazine
CAS:40172-95-0
Terazosin EP Impurity L Prazosin EP Impurity D P
TRZ12

1-(Hexahydrocyclopenta[c]pyrrol-2(1H)-yl)-3-[(2-methylphenyl)sulfonyl]urea
CAS:1076198-18-9
Gliclazide EP Impurity F Gliclazide BP Impurity F
GCZ06

1-(Hexahydrocyclopenta[c]pyrrol-2(1H)-yl)-3-[(4-methylphenyl)sulfonyl]urea
CAS:21187-98-4
Gliclazide
GCZ00

1-(Isopropylamino)-3-(2-(prop-1-enyl)phenoxy)propan-2-ol
Alprenolol EP Impurity C
APL03

1-(Methylthio)-3-(2-((5-nitrofuran-2-yl)methylene)hydrazinyl)propan-2-ol
Nifuratel Impurity C Descarbonyl Nifuratel
NFT63

1-(N,N-Dimethylamino)-4,4-diethoxybutane
CAS:1116-77-4
Zolmitriptan USP RC H
ZMT28B

1-(N-(2-Methyl-3-(4-tert-pentylphenyl)propyl)formamido)propan-2-yl acetate
CAS:142347-84-0
Amorolfine EP Impurity B
AMR02

1-(NAPHTHALEN-1-YL)ETHANAMINE
CAS:42882-31-5
Cinacalcet Impurity 16
CCC76B

1-(NAPHTHALEN-1-YL)ETHANONE
CAS:941-98-0
Cinacalcet Impurity 5
CCC65

1-(NAPHTHALEN-1-YLOXY)-3-(PIPERAZIN-1-YL)PROPAN-2-OL
CAS:75375-26-7
Naftopidil RC 3
NFP63

1-(Phenylmethyl)-1H-1,2,3-triazole-4-carboxamide
CAS:80819-65-4
Rufinamide 2,6-Didesfluoro Impurity
RFN50

1-(Phthalazin-1-yl)-2-(propan-2-ylidene)hydrazine
CAS:56173-18-3
Hydralazine Acetone Hydrazone
HDL56

1-(Piperidin-4-yl)-1,3-dihydro-2H-benzimidazol-2-one
CAS:20662-53-7
Pimozide EP Impurity A Pimozide Amine (USP) Benp
PZD01

1-(Piperidin-4-yl)-1,3-dihydro-2H-benzimidazol-2-one
CAS:20662-53-7
Benperidol EP Impurity A Pimozide EP Impurity A
BPD01

1-(Pyridin-3-yl)ethanone 3-Acetylpyridine
CAS:350-03-8
Imatinib EP Impurity H
IMT08

1-(PYRIDIN-4-YL)PROPAN-2-ONE
CAS:6304-16-1
Milrinone RC 8
MLR58

1-(ß-D-Glucopyranosyloxy)-3,8-dihydroxy-6-methyl-9,10-anthracenedione
CAS:23313-21-5
Emodin Glucoside Emodin 8-ß-D-Glucoside
EMX58

1-(TRIPHENYLMETHYL)-1H-IMIDAZOLE
CAS:15469-97-3
Clotrimazole EP Impurity F Deschloro Clotrimazole
CLT06

1-?(4-?PYRIDINYL)?-2-BUTANONE
CAS:6304-20-7
Milrinone RC 9
MLR59

1-?[(2'-?CARBAMOYLBIPHENYL-?4-?YL) METHYL]?-?2-?ETHOXYBENZIMIDAZOLE-?7-?CARBOXYLIC ACID
CAS:1696392-11-6
Azilsartan Amide Impurity
AZS53

1-?[2-?(METHYLSULFONYL)?-?5-?OXIDO-?10H-?PHENOTHIAZIN-?10-?YL]?-ETHANONE
CAS:2095609-60-0
Metopimazine RC 2
MPZ62

1-?C-?[4-?CHLORO-?3-?[(4-?ETHOXYPHENYL)?METHYL]?PHENYL]?-D-?GLUCOPYRANOSE
CAS:461432-27-9
Dapagliflozin RC 32
DPG92

1-[((3-[2-(dimethylamino)ethyl]indol-5-yl)methyl)sulfonyl]pyrrolidine N-oxide
CAS:603137-43-5
Almotriptan USP RC D (Base) Almotriptan EP Impuri
AMT24B

1-[((3-[2-(dimethylamino)ethyl]indol-5-yl)methyl)sulfonyl]pyrrolidine N-oxide HCl
CAS:1391054-49-1
Almotriptan USP RC D (HCl) Almotriptan EP Impurit
AMT24H

1-[(1-Methylethyl)amino]-3-[2-(2-propen-1-yloxy)phenoxy]-2-propanol Hydrochloride
CAS:6452-73-9
Oxprenolol HCl
OPN00H

1-[(1-Methylethyl)nitrosoamino]-3-(1-naphthalenyloxy)-2-propanol
CAS:84418-35-9
Propranolol N-Nitroso Impurity
PPN50

1-[(1RS)-1-Phenylethyl]-1H-imidazole-5-carboxylic acid
CAS:7036-56-8
Etomidate EP Impurity A Etomidate Acid Racemate
EDT01

1-[(2'-Carboxy biphenyl-4-yl)methyl]-4-methyl-2-propyl-1H-benzimidazol-6-carboxylic acid
CAS:884330-12-5
Telmisartan EP Impurity E Telmisartan Diacid (USP
TST05

1-[(2,6-DIFLUOROPHENYL)METHYL]-1H-1,2,3-TRIAZOLE-4-CARBOXAMIDE
CAS:106308-44-5
Rufinamide
RFN00

1-[(2-Chlorophenyl)(phenyl)methyl]-4-(3-methylbenzyl) piperazine
CAS:713071-37-5
Meclizine ortho-Chloro Isomer (Base)
MCL33B

1-[(2-Chlorophenyl)(phenyl)methyl]-4-(3-methylbenzyl) piperazine dihydrochloride
CAS:115291-60-6
Meclizine ortho-Chloro Isomer (2HCl)
MCL33H

1-[(2-CHLOROPHENYL)DIPHENYLMETHYL]-1H-IMIDAZOLE
CAS:23593-75-1
Clotrimazole
CLT00

1-[(2-fluorophenyl)methyl]-1H-1,2,3-triazole-4-carboxamide
CAS:106308-41-2
Rufinamide USP RC A Rufinamide 6-Desfluoro Impuri
RFN21

1-[(2-Hydroxyethoxy)methyl]-7-imino-1,3,6,8-tetraazaspiro[4.4]nonane-2,4,9-trione
Aciclovir Impurity 2
ACV62

1-[(2R)-5-Oxo-2,5-dihydrofuran-2-yl]-5-methylpyrimidine2,4(1H,3H)-dione
Stavudine EP Impurity D Zidovudine BP Impurity D
STV04

1-[(2R)-Hydroxy-3-[(1-methylethyl)amino]propoxy]-4-naphthalenol hydrobrmide
Propranolol 4-Hydroxy R-Isomer (HBr)
PPN65H

1-[(2R,3R)-2-[(2,2-Dichloroacetyl)amino]-3-hydroxy-3-(4-nitrophenyl)propyl] ester butanedioic acid sodium salt
CAS:982-57-0
Chloramphenicol Succinate Sodium
CRP60N

1-[(2R,4S,5S)-4-Azido-5-(hydroxymethyl)tetrahydrofuran-2-yl]-3-[(2S,3S,5R)-2-(hydroxymethyl)-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-3-yl]-5-methylpyrimidine-2,4(1H,3H)-dione
CAS:148665-49-0
Zidovudine EP Impurity G
ZDV07

1-[(2R,5S)-2-(Hydroxymethyl)-1,3-oxathiolan-5-yl]pyrimidine-2,4(1H,3H)-dione
CAS:145986-07-8
Lamivudine EP Impurity J Lamivudine Dione Impurit
LMV10

1-[(2R,5S)-5-(Hydroxymethyl)-2,5-dihydrofuran-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione
CAS:3056-17-5
Stavudine Zidovudine EP Impurity A
STV00

1-[(2R,5S)-5-(Hydroxymethyl)-2,5-dihydrofuran-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione
CAS:3056-17-5
Zidovudine EP Impurity A Stavudine
ZDV01

1-[(2RS)-2-(2,4-DICHLOROPHENYL)-2-(PROP-2-ENYLOXY)ETHYL]-1H-IMIDAZOLE
CAS:35554-44-0
Enilconazole Imazalil
ENX00

1-[(2RS)-2-(2,4-Dichlorophenyl)-2-[(2,5-dichlorothiophen-3-yl)methoxy]ethyl]-1H-imidazole
CAS:119386-75-3
Tioconazole EP Impurity B (Base) Tioconazole USP
TCZ02B

1-[(2RS)-2-(2,4-Dichlorophenyl)-2-[(2,5-dichlorothiophen-3-yl)methoxy]ethyl]-1H-imidazole HCl
CAS:61675-62-5
Tioconazole EP Impurity B (HCl) Tioconazole USP R
TCZ02H

1-[(2RS)-2-(2,4-Dichlorophenyl)-2-[(thiophen-3-yl)methoxy]ethyl]-1H-imidazole
CAS:119386-74-2
Tioconazole EP Impurity A (Base) Tioconazole USP
TCZ01B

1-[(2RS)-2-(2,4-Dichlorophenyl)-2-[(thiophen-3-yl)methoxy]ethyl]-1H-imidazole HCl
CAS:61709-33-9
Tioconazole EP Impurity A (HCl) Tioconazole USP R
TCZ01H

1-[(2RS)-2-(2,4-Dichlorophenyl)-2-[[4-(benzenesulfinyl)benzyl]oxy]ethyl]-1H-imidazole
CAS:80639-94-7
Fenticonazole EP Impurity B (Base) Fenticonazole
FCZ02B

1-[(2RS)-2-(2,4-Dichlorophenyl)-2-[[4-(benzenesulfinyl)benzyl]oxy]ethyl]-1H-imidazole nitrate
CAS:80639-95-8
Fenticonazole EP Impurity B (Nitrate) Fenticonazo
FCZ02N

1-[(2RS)-2-(2,4-Dichlorophenyl)-2-[[4-(benzenesulfonyl)-benzyl]oxy]ethyl]-1H-imidazole
CAS:80676-28-4
Fenticonazole EP Impurity C (Base) Fenticonazole
FCZ03B

1-[(2RS)-2-(2,4-Dichlorophenyl)-2-[[4-(benzenesulfonyl)-benzyl]oxy]ethyl]-1H-imidazole nitrate
CAS:80676-29-5
Fenticonazole EP Impurity C (Nitrate) Fenticonazo
FCZ03N

1-[(2RS)-2-(2,4-Dichlorophenyl)-2-[[4-(phenylsulfanyl)-benzyl]oxy]ethyl]-1H-imidazole
CAS:72479-26-6
Fenticonazole (Base)
FCZ00B

1-[(2RS)-2-(2,4-Dichlorophenyl)-2-[[4-(phenylsulfanyl)-benzyl]oxy]ethyl]-1H-imidazole nitrate
CAS:73151-29-8
Fenticonazole (Nitrate) Fenticonazole Nitrate
FCZ00N

1-[(2RS)-2-(3,4-Dichlorophenyl)-2-(prop-2-enyloxy)ethyl]-1H-imidazole
Enilconazole EP Impurity F
ENX06

1-[(2RS)-2-[(2,4-Dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole
CAS:22916-47-8
Isoconazole EP Impurity D Isoconazole Nitrate EP
ISZ04

1-[(2RS)-2-[(2,5-DICHLOROBENZYL)OXY]-2-(2,4-DICHLOROPHENYL)ETHYL]-1H-IMIDAZOLE
CAS:909277-71-0
Miconazole EP Impurity G (Base)
MCN07B

1-[(2RS)-2-[(2,5-Dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole Nitrate
CAS:909277-72-1
Miconazole EP Impurity G (Nitrate)
MCN07N

1-[(2RS)-2-[(2,6-Dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole
CAS:27523-40-6
Isoconazole (Base) Miconazole EP Impurity D (Base
ISZ00B

1-[(2RS)-2-[(2,6-Dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole
CAS:27523-40-6
Miconazole EP Impurity D (Base) Isoconazole
MCN04B

1-[(2RS)-2-[(2,6-Dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole nitrate
CAS:24168-96-5
Miconazole EP Impurity D (Nitrate) Isoconazole Ni
MCN04N

1-[(2RS)-2-[(2,6-Dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole nitrate
CAS:24168-96-5
Isoconazole (Nitrate)
ISZ00N

1-[(2RS)-2-[(2-Chlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole
CAS:47363-37-1
Miconazole EP Impurity I (Base) Miconazole USP R
MCN09B

1-[(2RS)-2-[(2-Chlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole Nitrate
CAS:24169-00-4
Miconazole EP Impurity I (Nitrate) Miconazole US
MCN09N

1-[(2RS)-2-[(2-Chlorothiophen-3-yl)methoxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole
CAS:65899-73-2
Tioconazole
TCZ00

1-[(2RS)-2-[(3,4-Dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole
CAS:47447-55-2
Miconazole EP Impurity F (Base) Miconazole USP RC
MCN06B

1-[(2RS)-2-[(3,4-Dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole Nitrate
CAS:27220-35-5
Miconazole EP Impurity F (Nitrate) Miconazole USP
MCN06N

1-[(2RS)-2-[(4-Chlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole
CAS:913837-72-6
Miconazole EP Impurity B (Base)
MCN02B

1-[(2RS)-2-[(4-Chlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole
CAS:27220-47-9
Econazole
ECZ00B

1-[(2RS)-2-[(4-Chlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole nitrate
CAS:24169-02-6
Econazole nitrate
ECZ00N

1-[(2RS)-2-[(4-Chlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole nitrate
Miconazole EP Impurity B (Nitrate)
MCN02N

1-[(2RS)-2-[(5-Bromo-2-chlorothiophen-3-yl)methoxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole
CAS:119386-76-4
Tioconazole EP Impurity C (Base) Tioconazole USP
TCZ03B

1-[(2RS)-2-[(5-Bromo-2-chlorothiophen-3-yl)methoxy]-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole HCl
Tioconazole EP Impurity C (HCl) Tioconazole USP R
TCZ03H

1-[(2RS)-2-BENZYLOXY-2-(2,4-DICHLOROPHENYL)ETHYL]-1H-IMIDAZOLE
CAS:181931-30-6
Miconazole EP Impurity H (Base)
MCN08B

1-[(2RS)-2-BENZYLOXY-2-(2,4-DICHLOROPHENYL)ETHYL]-1H-IMIDAZOLE NITRATE
Miconazole EP Impurity H (Nitrate)
MCN08N

1-[(2ß,3a,5a,16ß,17ß)-17-(Acetyloxy)-3-hydroxy-2-(4-morpholinyl)androstan-16-yl]-1-(2-propenyl)pyrrolidinium bromide N-oxide
Rocuronium Bromide N-Oxide
RCR50

1-[(3,3-DIPHENYLPROPYL)METHYLAMINO]-2-METHYL-2-PROPANOL
CAS:100442-33-9
Lercanidipine Impurity E
LCN05B

1-[(3R)-3-[4-(Acyloyl)amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-1-piperidinyl]-2-propen-1-one
CAS:2031255-27-1
Ibrutinib Diacryloyl Analog
IBT91

1-[(3R)-3-[4-Amino-3-(4-phenoxyphenyl)-1-oxido-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-1-piperidinyl]-2-propen-1-one
CAS:2417548-74-2
Ibrutinib N1-Oxide
IBT41

1-[(3R)-3-[4-Amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-1-piperidinyl]-2,3-dihydroxy-1-propanone
CAS:1654820-87-7
Ibrutinib Dihydrodiol R-Isomer Ibrutinib M37 R-Is
IBT93

1-[(3R)-3-[4-AMINO-3-(4-PHENOXYPHENYL)-1H-PYRAZOLO[3,4-D]PYRIMIDIN-1-YL]-1-PIPERIDINYL]-2-PROPEN-1-ONE
CAS:936563-96-1
Ibrutinib Ibrutinib R-Isomer
IBT00

1-[(3R)-3-[4-Amino-3-(4-phenoxyphenyl)-5-oxido-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-1-piperidinyl]-2-propen-1-one
Ibrutinib N5-Oxide
IBT45

1-[(3R,5S,6E)-7-[4-(4-Fluorophenyl)-6-(1-methylethyl)-2-[methyl(methyl sulfonyl)amino]-5-pyrimidinyl]-3,5-dihydroxy-6-heptenoate] ß-D-gluco pyranuronic acid
CAS:503610-44-4
Rosuvastatin Acyl-beta-D-Glucuronide
RSV90

1-[(3S)-3-[4-Amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-1-piperidinyl]-2-propen-1-one
CAS:936563-97-2
Ibrutinib (S)-Isomer
IBT50

1-[(3S)-9-Fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate]-ß-D-glucopyranuronic acid
CAS:160962-46-9
Levofloxacin Acyl-ß-D-Glucuronide
LFX50

1-[(3S)-9-Fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate]-ß-D-glucopyranuronic acid methyl ester
Levofloxacin Acyl-ß-D-Glucuronide Methyl Ester
LFX51

1-[(4-Chlorophenyl)(phenyl)methyl]-4-(2-methylbenzyl)piperazine dihydrochloride
Meclizine USP RC B Isomeclizine Meclizine otho-M
MCL22H

1-[(4-CHLOROPHENYL)DIPHENYLMETHYL]-1H-IMIDAZOLE
CAS:23593-71-7
Clotrimazole EP Impurity B Clotrimazole p-Chloro
CLT02

1-[(4-Chlorophenyl)phenylmethyl]-4-[(3-methylphenyl) methyl]-piperazine
CAS:569-65-3
Meclizine (Base) Meclozine (Base)
MCL00B

1-[(4-Chlorophenyl)phenylmethyl]-4-[(3-methylphenyl) methyl]-piperazine dihydrochloride
CAS:1104-22-9
Meclizine (2HCl) Meclizine Dihydrochloride Meclo
MCL00X

1-[(4-Chlorophenyl)phenylmethyl]-4-[(3-methylphenyl) methyl]-piperazine dihydrochloride monohydrate
CAS:31884-77-2
Meclizine (2HCl Monohydrate) Meclizine Dihydrochl
MCL00H

1-[(4-CHLOROPHENYL)PHENYLMETHYL]-4-[(3-METHYLPHENYL)METHYL]PIPERAZINE 1,4-DIOXIDE
CAS:114624-70-3
Meclizine N,N-Dioxide
MCL36

1-[(4-CHLOROPHENYL)PHENYLMETHYL]-4-[(3-METHYLPHENYL)METHYL]PIPERAZINE 4-OXIDE
CAS:114624-69-0
Meclizine N4-Oxide
MCL35

1-[(4-Chlorophenyl)phenylmethyl]-4-[(4-methylphenyl)methyl]-piperazine
CAS:873395-53-0
Meclizine 4-Methyl Analog 3-Desmethyl 4-Methyl Me
MCL34B

1-[(4-Chlorophenyl)phenylmethyl]-4-[(4-methylphenyl)methyl]-piperazine dihydrochloride
CAS:879672-35-2
Meclizine 4-Methyl Analog (2HCl) 3-Desmethyl 4-Me
MCL34H

1-[(4-Methylphenyl)sulfonyl]-3-(3,3a,4,6a-tetrahydrocyclopenta[c]pyrrol-2(1H)-yl)urea
CAS:1808087-53-7
Gliclazide EP Impurity E Gliclazide BP Impurity E
GCZ05

1-[(4-Methylphenyl)sulfonyl]urea
CAS:1694-06-0
Tolbutamide EP Impurity B Toluenesulfonylurea
TBM02

1-[(4R,5R)-N2-(10,12-DIMETHYL-N-TETRADECYL)-4-HYDROXY-5-(PHENYLTHIO)-L-ORNITHINE]-PNEUMOCANDIN B0
Caspofungin Phenylthio Deoxy Amide
CSF53

1-[(4R,5S)-5-[(2-Aminoethyl)amino]-N2-[(10R,12S)-10,12-dimethyl-1-oxotetradecyl]-4-hydroxy-L-ornithine]-5-(threo-3-hydroxy-L-ornithine)pneumocandin B0
CAS:162808-62-0
Caspofungin (Base)
CSF00B

1-[(4RS)-4-[4-(1,1-Dimethylethyl)phenyl]-4-hydroxybutyl]-4-(hydroxydiphenyl methyl)piperidine 1-oxide
CAS:634901-83-0
Terfenadine EP Impurity C Terfenadine N-Oxide
TFN03

1-[(4RS)-4-[4-(1,1-Dimethylethyl)phenyl]-4-hydroxybutyl]piperidine-4-carboxylic acid
Terfenadine EP Impurity E
TFN05

1-[(5E)-11-(3,7-Dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-1-yl)-5-methyl-7-oxoundec-5-enyl]-3,7-dimethyl-3,7-dihydro-1H-purine-2,6-dione
CAS:874747-30-5
Pentoxifylline EP Impurity J
PTX10

1-[(7-Methoxy-1-naphthalenyl)oxy]-3-[(1-methylethyl)amino]-2-propanol
CAS:76275-53-1
Propranolol 7-Methoxy Impurity
PPN67

1-[(Methylamino)-[[2-[[(5-methyl-1H-imidazol-4-yl)methyl]sulfanyl]-ethyl] amino]methylidene]urea dihydrochloride
CAS:52568-80-6
Cimetidine EP Impurity C Cimetidine Amide Impuri
CMT03H

1-[(RS)-(2-Fluorophenyl)(4-fluorophenyl)methyl]-4-[(2E)-3-phenylprop-2-enyl]piperazine
CAS:90830-31-2
Flunarizine EP Impurity C (Base) 4-Defluoro 2-Flu
FNZ03B

1-[(RS)-(2-FLUOROPHENYL)(4-FLUOROPHENYL)METHYL]-4-[(2E)-3-PHENYLPROP-2-ENYL]PIPERAZINE DIHYDROCHLORIDE
Flunarizine EP Impurity C (2HCl) Flunarizine 2-Flu
FNZ03H

1-[(RS)-(4-Fluorophenyl)phenylmethyl]-4-[(2E)-3-phenylprop-2-enyl]piperazine
CAS:39245-25-5
Flunarizine EP Impurity B (Base) Defluoro Flunari
FNZ02B

1-[(RS)-(4-Fluorophenyl)phenylmethyl]-4-[(2E)-3-phenylprop-2-enyl]piperazine dihydrochloride
CAS:27064-96-6
Flunarizine EP Impurity B (2HCl) Defluoro Flunari
FNZ02H

1-[(RS)-(Biphenyl-4-yl)phenylmethyl]-1H-imidazole
CAS:60628-96-8
Bifonazole
BFN00

1-[[(1-Methylethoxy)carbonyl]oxy]ethyl (6R,7R)-7-[[(2Z)-2-[2[[(2R)-2-[[(2Z)-2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetyl]amino]-2-[(2R)-5-(methoxy methyl)-4-[[1-[[(1-methylethoxy)carbonyl]oxy]ethoxy]carbonyl]-3,6-dihydro-2H-1,3-thiazin-2-yl]acetyl]amino
CAS:947692-16-2
Cefpodoxime Proxetil EP Impurity H Cefpodoxime Pr
CPD08

1-[[(2RS)-2-(2,4-Difluorophenyl)oxiran-2-yl]methyl]-1H-1,2,4-triazole
CAS:86386-76-7
Fluconazole EP Impurity G Fluconazole Epoxide Imp
FLC07

1-[[(2RS)-TETRAHYDROFURAN-2-YL]CARBONYL]PIPERAZINE
CAS:63074-07-7
Terazosin EP Impurity N (Base)
TRZ14B

1-[[(2RS)-Tetrahydrofuran-2-yl]carbonyl]piperazine HBr
CAS:63590-62-5
Terazosin EP Impurity N (HBr)
TRZ14H

1-[[(4-Aminophenyl)sulfonyl](4,6-dimethyl-2-pyrimidinyl)amino]-1-deoxy-ß-D-glucopyranuronic acid
CAS:52351-41-4
Sulfadimidine RC 1 Sulfamidine N1-Glucuronide
SDD61

1-[[(6R,7R)-7-[[(2Z)-(2-Amino-4-thiazolyl) (methoxyimino) acetyl] amino]-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-1-methyl pyrrolidinium
CAS:88040-23-7
Cefepime (Base)
CPM00B

1-[[(6R,7R)-7-[[(2Z)-(2-Amino-4-thiazolyl) (methoxyimino) acetyl] amino]-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-1-methyl pyrrolidinium chloride monohydrochloride monohydrate
CAS:123171-59-5
Cefepime (HCl) Cefepime Dihydrochloride Monohydra
CPM00H

1-[[(6R,7R)-7-[[(2Z)-(2-Amino-4-thiazolyl)(methoxyimino)acetyl]amino]-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-6,7-dihydro-5H-cyclopenta[b]pyrindinium monosulfate salt
CAS:98753-19-6
Cefpirome sulfate
CFR00

1-[[(6R,7R)-7-[[(2Z)-(2-Amino-4-thiazolyl)[(1-carboxy-1-methylethoxy) imino]acetyl]amino]-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]pyridinium inner salt
CAS:72558-82-8
Ceftazidime (Anhydrous)
CFT00A

1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-(R)-hydroxy-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic acid
CAS:184763-26-6
Montelukast (R)-Hydroxy Metabolite
MTL47A

1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-(S)-hydroxy-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic acid
CAS:184763-29-9
Montelukast (S)-Hydroxy Metabolite
MTL48A

1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl] propyl]thio]methyl]cyclopropaneacetamide
CAS:866923-63-9
Montelukast Amide
MTL70

1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl] propyl]thio]methyl]cyclopropaneacetic acid
CAS:158966-92-8
Montelukast (Acid) (R)-Montelukast Acid
MTL00A

1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl] propyl]thio]methyl]cyclopropaneacetic acid dicyclohexylamine salt
CAS:577953-88-9
Montelukast (Dicyclohexylamine Salt)
MTL00D

1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic acid sodium salt
CAS:151767-02-1
Montelukast (Sodium)
MTL00N

1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetonitrile
CAS:866923-62-8
Montelukast Nitrile Impurity
MTL51

1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-methoxy-1-methylethyl)phenyl] propyl]thio]methyl]cyclopropaneacetic acid methyl ester
Montelukast Acid Methyl Ester Methyl Ether
MTL61

1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-methoxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic acid
CAS:1351973-25-5
Montelukast Methyl Ether
MTL50

1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-oxo-2-hydroxyethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic acid
Montelukast Ketocarbinol Impurity Montelukast Hyd
MTL80

1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-[1-hydroxy-2-(methoxymethoxy)-1-methylethyl]phenyl]propyl]thio]methyl]cyclo propaneacetic acid
CAS:184764-27-0
Montelukast Methoxymethoxy Impurity
MTL74

1-[[[(1R)-1-[3-[(1R)-1-[[[1-(Carboxymethyl)cyclopropyl]methyl]thio]-2-(7-chloro-2-quinolinyl) ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl) phenyl] propyl] thio]methyl]-cyclopropaneacetic acid
CAS:1187586-61-3
Montelukast EP Impurity D Montelukast USP RC C M
MTL04

1-[[[(1R)-1-[3-[(1RS)-1-[[[1-(Carboxymethyl)cyclopropyl]methyl]thio]-2-(7-chloro-2-quinolinyl) ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl) phenyl] propyl] thio]methyl]-cyclopropaneacetic acid
CAS:1242260-05-4
Montelukast Bis-Sulfide
MTL45

1-[[[(1R)-1-[3-[(1S)-1-[[[1-(Carboxymethyl)cyclopropyl]methyl]thio]-2-(7-chloro-2-quinolinyl) ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl) phenyl] propyl] thio]methyl]-cyclopropaneacetic acid
CAS:1187586-58-8
Montelukast EP Impurity E Montelukast USP RC D M
MTL05

1-[[[(1R)-1-[3-[2-(7-Chloro-2-quinolinyl)ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl] thio]methyl]cyclopropaneacetic acid
CAS:142147-67-9
Montelukast Dihydro (Acid)
MTL40A

1-[[[(1R)-1-[3-[2-(7-Chloro-2-quinolinyl)ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl] thio]methyl]cyclopropaneacetic acid sodium salt
CAS:142147-98-6
Montelukast Dihydro (Sodium Salt)
MTL40N

1-[[[(1RS)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl) phenyl]propyl]thio]methyl]cyclopropaneacetic acid
Montelukast Acid Racemate (RS)-Montelukast Acid
MTL20A

1-[[[(1S)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl] propyl]thio]methyl]cyclopropaneacetic acid sodium salt
CAS:190078-45-6
Montelukast EP Impurity A Montelukast S-Isomer
MTL01N

1-[[[1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl] thio]methyl]cyclopropaneacetic acid methyl ester
CAS:855473-51-7
Montelukast Acid Methyl Ester
MTL60

1-[[[1-[3-[2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methyl ethyl)phenyl]propyl] sulfinyl]methyl]cyclopropaneacetic acid
CAS:909849-96-3
Montelukast EP Impurity C Montelukast USP RC A M
MTL03

1-[[[2-(Dimethyl-amino)ethyl]-1H-indol-5-yl]methyl]sulfonyl]pyrrolidine Malate
CAS:181183-52-8
Almotriptan Malate
AMT00M

1-[[2'-(2,5-DIHYDRO-5-OXO-1,2,4-OXADIAZOL-3-YL)[1,1'-BIPHENYL]-4-YL]METHYL]-2-ETHOXY-1H-BENZIMIDAZOLE-7-CARBOXYLIC ACID ETHYL ESTER
CAS:1403474-70-3
Azilsartan Ethyl Ester Azilsartan Acid Ethyl Este
AZS52

1-[[2'-(2,5-DIHYDRO-5-OXO-1,2,4-OXADIAZOL-3-YL)[1,1'-BIPHENYL]-4-YL]METHYL]-2-ETHOXY-1H-BENZIMIDAZOLE-7-CARBOXYLIC ACID METHYL ESTER
CAS:147403-52-9
Azilsartan Methyl Ester Azilsartan Acid Methyl Es
AZS51

1-[[2'-(Aminocarbonyl)[1,1'-biphenyl]-4-yl]methyl]-2-ethoxy-1H-benzimidazole-7-carboxylic Acid (5-Methyl-2-oxo-1,3-dioxol-4-yl)methyl ester
CAS:1696392-12-7
Azilsartan Medoxomil Amide
AZS59

1-[[2'-(METHOXYCARBONYL)[1,1'-BIPHENYL]-4-YL]METHYL]-4-METHYL-2-PROPYL-1H-BENZIMIDAZOLE-6-CARBOXYLIC ACID METHYL ESTER
CAS:916332-38-2
Telmisartan Impurity 17
TST77

1-[[2-(2-Methoxyphenoxy)ethyl]amino]-3-[(2,3,4,9-tetrahydro-1H-carbazol-5-yl)oxy]-2-propanol
CAS:1246820-73-4
Carvedilol USP RC F 6,7,8,9-Tetrahydro Carvedilol
CVD26

1-[[2’-(2,5-Dihydro-5-oxo-1,2,4-oxadiazol-3-yl)[1,1’-biphenyl]-4-yl]methyl]-2-ethoxy-1H-benzimidazole-7-carboxylic acid
CAS:147403-03-0
Azilsartan (Acid)
AZS00A

1-[[2’-(2,5-Dihydro-5-oxo-1,2,4-oxadiazol-3-yl)[1,1’-biphenyl]-4-yl]methyl]-2-ethoxy-1H-benzimidazole-7-carboxylic acid (5-methyl-2-oxo-1,3-dioxol-4-yl)methyl ester
CAS:863031-21-4
Azilsartan Medoxomil
AZS00M

1-[[2’-(5-Ethoxy-1,2,4-oxadiazol-3-yl)[1,1’-biphenyl]-4-yl]methyl]-2-ethoxy-1H-benzimidazole-7-carboxylic acid (5-methyl-2-oxo-1,3-dioxol-4-yl)methyl ester
Azilsartan Medoxomil O-Ethyl Ether
AZS66

1-[[2’-(Aminoiminomethyl)[1,1’-biphenyl]-4-yl]methyl]-2-ethoxy-1H-benzimidazole-7-carboxylic acid
CAS:1442400-65-8
Azilsartan Imino Impurity Azilsartan Metabolite I
AZS50

1-[[3-(1,4-Dihydro-4-oxo-5,7-dimethylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl]sulfonyl]-4-ethyl-piperazine
CAS:2169247-39-4
Vardenafil EP Impurity A 7-Methyl Vardenafil (USP
VDF01

1-[[3-(1,4-Dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl]sulfonyl]-4-ethyl-4-oxido-piperazine
CAS:448184-48-3
Vardenafil N-Oxide
VDF53

1-[[3-(1,4-Dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl]sulfonyl]-4-ethyl-piperazine
CAS:224785-90-4
Vardenafil (Base)
VDF00B

1-[[3-(1,4-Dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl]sulfonyl]-4-ethyl-piperazine dihydrochloride
CAS:224789-15-5
Vardenafil (2HCl) Vardenafil Dihydrochloride
VDF00D

1-[[3-(1,4-Dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl]sulfonyl]-4-ethyl-piperazine hydrochloride
CAS:224785-91-5
Vardenafil (HCl)
VDF00X

1-[[3-(1,4-Dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl]sulfonyl]-4-ethyl-piperazine hydrochloride trihydrate
CAS:330808-88-3
Vardenafil (HCl Trihydrate)
VDF00H

1-[[3-(1,4-Dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxyphenyl]sulfonyl]-4-hydroxyethyl-piperazine
CAS:224785-98-2
Vardenafil Hydroxyethyl Impurity
VDF50

1-[[3-(1,4-DIHYDRO-5-METHYL-4-OXO-7-PROPYLIMIDAZO[5,1-F][1,2,4]TRIAZIN-2-YL)-4-ETHOXYPHENYL]SULFONYL]-PIPERAZINE
CAS:448184-46-1
Vardenafil N-Desethyl Impurity
VDF52

1-[[4-(2-Aminoethyl)phenyl]sulphonyl]-3-(trans-4-methyl cyclohexyl) urea
CAS:41176-98-1
Glimepiride EP Impurity J (Base) Glimepiride USP
GLM10B

1-[[4-(2-Aminoethyl)phenyl]sulphonyl]-3-(trans-4-methyl cyclohexyl) urea HCl
Glimepiride EP Impurity J (HCl) Glimepiride USP R
GLM10H

1-[[4-(2-Hydroxy-3-[[2-(methoxyphenoxy)ethyl]amino]propyl]-9H-carbazol-4-yl]oxy]-3-[[2-(2-methoxyphenoxy)ethyl]amino]propan-2-ol
CAS:1076199-79-5
Carvedilol RC 1
CVD61

1-[[4-[2-(HEXAHYDRO-1-OXIDO-1H-AZEPIN-1-YL)ETHOXY]PHENYL]METHYL]-2-(4-HYDROXYPHENYL)-3-METHYL-1H-INDOL-5-OL
CAS:1174289-22-5
Bazedoxifene N-Oxide
BZD51

1-[[4-[2-(Hexahydro-1H-azepin-1-yl)ethoxy]phenyl]methyl]-2-(4-hydroxyphenyl)-3-methyl-1H-indol-5-ol
CAS:198481-32-2
Bazedoxifene
BZD00B

1-[[4-[2-(Hexahydro-1H-azepin-1-yl)ethoxy]phenyl]methyl]-2-(4-hydroxyphenyl)-3-methyl-1H-indol-5-ol acetate
CAS:198481-33-3
Bazedoxifene acetate
BZD00A

1-[[4-[2-[(5-Chloro-2-methoxybenzoyl)amino]ethyl]phenyl]sulfonyl]-3-cyclohexylurea
CAS:10238-21-8
Glyburide Glibenclamide
GLB00

1-[[4-[2-[[(3-Ethyl-4-methyl-2-oxo-2,3-dihydro-1H-pyrrol-1-yl) carbonyl] amino] ethyl] phenyl] sulphonyl]-3-(4-methylphenyl)urea
Glimepiride EP Impurity H Glimepiride USP RC H G
GLM08

1-[[5-(p-Nitrophenyl)furfurylidene]amino]hydantoin
CAS:7261-97-4
Dantrolene
DTL00A

1-[[5-(p-Nitrophenyl)furfurylidene]amino]hydantoin sodium salt
CAS:24868-20-0
Dantrolene Sodium
DTL00N

1-[[7-[2-Hydroxy-3-[(1-methylethyl)amino]propyl]-1H-indol-4-yl]oxy]-3-[(1-methylethyl)amino]propan-2-ol
Pindolol EP Impurity A
PDL01

1-[[m-[2-(3-Ethyl-4-methyl-2-oxo-3-pyrroline-1-carboxamido) ethyl]phenyl] sulfonyl]-3-(trans-4-methylcyclohexyl)urea
CAS:791104-62-6
Glimepiride EP Impurity D Glimepiride USP RC D G
GLM04

1-[[p-[2-(3-Ethyl-4-methyl-2-oxo-3-pyrroline-1-carboxamido) ethyl] phenyl] sulfonyl]-methoxy carbamate
CAS:119018-30-3
Glimepiride EP Impurity C Glimepiride USP RC C G
GLM03

1-[1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indole-3-acetate] ß-D-glucopyranuronic acid
CAS:75523-11-4
Indomethacin Acyl-ß-D-Glucuronide Indomethacin G
IDM51

1-[1-[(4RS)-4-(2-Fluorophenyl)-4-(4-fluorophenyl)butyl]-piperidin-4-yl]-1,3-dihydro-2H-benzimidazol-2-one
Pimozide EP Impurity C Pimozide 4-Desfluoro 2-Flu
PZD03

1-[1-[(4RS)-4-(4-Fluorophenyl)-4-phenylbutyl]piperidin-4-yl]-1,3-dihydro-2H-benzimidazol-2-one
CAS:1997-93-9
Pimozide EP Impurity B Pimozide Desfluoro Impurit
PZD02

1-[1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl) phenyl]propyl]thio]methyl]cyclopropaneacetate] ß-D-Glucopyranuronic acid
CAS:188717-17-1
Montelukast Acyl-ß-D-Glucuronide
MTL54B

1-[1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl) phenyl]propyl]thio]methyl]cyclopropaneacetate] ß-D-Glucopyranuronic acid acetate salt
Montelukast Acyl-ß-D-Glucuronide Acetate Salt
MTL54A

1-[1-[4,4-bis(4-Fluorophenyl)butyl]-1,2,3,6-tetrahydropyridin-4-yl]-1,3-dihydro-2H-benzimidazol-2-one
Pimozide EP Impurity D Pimozide Dehydro Impurity
PZD04

1-[1-[4,4-BIS(4-FLUOROPHENYL)BUTYL]-4-PIPERIDINYL]-1,3-DIHYDRO-2H-BENZIMIDAZOL-2-ONE
CAS:2062-78-4
Pimozide
PZD00

1-[1-[4,4-bis(4-Fluorophenyl)butyl]piperidin-4-yl1-oxide]-1,3-dihydro-2H-benzimidazol-2-one
CAS:1083078-88-9
Pimozide EP Impurity E Pimozide N-Oxide
PZD05

1-[1-[4-(2-Fluorophenyl)-4-oxobutyl]piperidin-4-yl]-1,3-dihydro-2H-benzimidazol-2-one
Benperidol EP Impurity B
BPD02

1-[1-[4-(4-Fluorophenyl)-4-oxobutyl]piperidin-4-yl]-1,3-dihydro-2H-benzimidazol-2-one
CAS:2062-84-2
Benperidol
BPD00

1-[1-[4-[4-[4-(2-Oxo-2,3-dihydro-1H-benzimidazol-1-yl)-3,6-dihydropyridin-1(2H)-yl]-1-oxobutyl]phenyl]-1,2,3,6-tetrahydro-4-pyridinyl]-1,3-dihydro-2H-benzimidazol-2-one
CAS:1346604-17-8
Droperidol EP Impurity E
DPL05

1-[1-[4-Oxo-4-[4-[4-(2-oxo-2,3-dihydro-1H-benzimidazol-1-yl)piperidin-1-yl]phenyl]butyl]piperidin-4-yl]-1,3-dihydro-2H-benzimidazol-2-one
Benperidol EP Impurity C
BPD03

1-[1-Methyl-2-[2-(phenylmethyl)phenoxy]ethyl]piperidine phosphate
CAS:19428-14-9
Benproperine (Phosphate Salt)
BNP00P

1-[1-Methyl-5-(4-methylbenzoyl)-1H-pyrrole-2-acetate] ß-D-glucopyranuronic acid
CAS:71595-19-2
Tolmetin ß-D-Glucuronide
TMT60

1-[10-(4-Amino-2-methylquinolinio)decyl]-4-[[10-(4-amino-2-methylquinolinio)decyl]amino]-2-methylquinolinium trichloride
CAS:171980-50-0
Dequalinium EP Impurity C
DQL03

1-[17ß-(Acetyloxy)-2-(morpholin-4-yl)-3-oxo-5a-androst-1-en-16ß-yl]-1-(prop-2-enyl)pyrrolidinium bromide
CAS:1190105-67-9
Rocuronium EP Impurity H 1,2-Dehydro-3-Oxo Rocuro
RCR08

1-[17ß-(Acetyloxy)-3a-hydroxy-2ß-(morpholin-4-yl)-5a-androstan-16ß-yl]-1-(prop-2-enyl)pyrrolidinium bromide
CAS:119302-91-9
Rocuronium bromide
RCR00

1-[17ß-(Acetyloxy)-3a-hydroxy-2ß-(piperidin-1-yl)-5a-androstan-16ß-yl]-1-methylpiperidinium
CAS:73319-13-8
Vecuronium EP Impurity C Vecuronium USP RC F
VCR03

1-[17ß-(Acetyloxy)-3a-hydroxy-2ß-(pyrrolidin-1-yl)-5a-androstan-16ß-yl]-1-(prop-2-enyl)pyrrolidinium bromide
CAS:1190105-65-7
Rocuronium EP Impurity E 2-Pyrrolidinyl Desmorpho
RCR05

1-[2-(2,4-DICHLOROPHENYL)-2-[(2,4-DICHLOROPHENYL)METHOXY]ETHYL]-1H-IMIDAZOLE
CAS:22916-47-8
Miconazole (Base) Isoconazole EP Impurity D Isoc
MCN00B

1-[2-(2,4-Dichlorophenyl)-2-[(2,4-dichlorophenyl)methoxy]ethyl]-1H-imidazole nitrate
CAS:22832-87-7
Miconazole (Nitrate)
MCN00N

1-[2-(2-(p-Methoxyphenyl)ethylamino-1-(4-methoxyphenyl) ethyl] cyclo hexanol
CAS:1329795-88-1
Venlafaxine EP Impurity H (Base)
VLF08B

1-[2-(2-(p-Methoxyphenyl)ethylamino-1-(4-methoxyphenyl) ethyl] cyclo hexanol hydrochloride
Venlafaxine EP Impurity H (HCl)
VLF08H

1-[2-(2-HYDROXYETHOXY)ETHYL]PIPERAZINE
CAS:13349-82-1
Quetiapine HEEP Impurity (Base)
QTP62B

1-[2-(2-HYDROXYETHOXY)ETHYL]PIPERAZINE DIHYDROCHLORIDE
CAS:85293-16-9
Quetiapine HEEP Impurity (2HCl)
QTP62H

1-[2-(2-Hydroxyethyl)phenyoxy]-2,3-epoxypropane
CAS:104857-48-9
Metoprolol Hydroxy Epoxide Impurity
MTP40

1-[2-(2-METHOXYETHYL)PHENYOXY]-2,3-EPOXYPROPANE
CAS:56718-70-8
Metoprolol Methoxy Epoxide
MTP27

1-[2-(DIMETHYLAMINO)ETHYL]-6,6A,7,11-TETRAHYDROOXAZOLO[3,4-B]PYRROLO[2,3-H]ISOQUINOLIN-9(3H)-ONE
CAS:1346599-24-3
Zolmitriptan USP RC C (Base)
ZMT23B

1-[2-(Dimethylamino)ethyl]-6,6a,7,11-tetrahydrooxazolo[3,4-b]pyrrolo[2,3-h]isoquinolin-9(3H)-one formate salt
Zolmitriptan USP RC C (Formate)
ZMT23F

1-[2-(ETHYLSULFONYL)ETHYL]-2-METHYL-4-NITRO-1H-IMIDAZOLE
CAS:25459-12-5
Tinidazole EP Impurity B Tinidazole USP RC B 4-N
TND02

1-[2-(ETHYLSULFONYL)ETHYL]-2-METHYL-5-NITRO-1H-IMIDAZOLE
CAS:19387-91-8
Tinidazole
TND00

1-[2-[(2,3-Dimethylphenyl)thio]phenyl]-piperazine
CAS:1293489-77-6
Vortioxetine Impurity 4
VXT54

1-[2-[(2,4-Dimethylphenyl)thio]phenyl]-piperazine
CAS:508233-74-7
Vortioxetine (Base)
VXT00B

1-[2-[(2,4-Dimethylphenyl)thio]phenyl]-piperazine hydrobromide
CAS:960203-27-4
Vortioxetine (HBr)
VXT00H

1-[2-[(2,4-Dimethylphenyl)thio]phenyl]-piperazine hydrochloride
CAS:960203-28-5
Vortioxetine (HCl)
VXT00X

1-[2-[(2,6-Dimethylphenyl)thio]phenyl]-piperazine
CAS:508233-76-9
Vortioxetine Impurity 5
VXT55

1-[2-[(2-AMINO-4-CHLOROPHENYL)AMINO]BENZOYL]-4-METHYLPIPERAZINE
CAS:65514-71-8
Clozapine EP Impurity D Clozapine BP Impurity D
CLZ04

1-[2-[(2-Methylphenyl)thio]phenyl]-piperazine
CAS:1293489-71-0
Vortioxetine Impurity 1
VXT51

1-[2-[(2RS)-2,3-DIHYDROXYPROPOXY]PHENYL]-3-PHENYLPROPAN-1-ONE
CAS:91401-73-9
Propafenone EP Impurity D Despropylamino Hydroxy
PRP04

1-[2-[(2RS)-2-Hydroxy-3-(propylamino)propoxy]phenyl]-3phenylpropan-1-one hydrochloride
CAS:34183-22-7
Propafenone Hydrochloride
PRP00H

1-[2-[(2RS)-2-Hydroxy-3-aminopropoxy]phenyl]-3phenylpropan-1-one
CAS:86383-21-3
Propafenone N-Despropyl Impurity (Base)
PRP50B

1-[2-[(2RS)-2-Hydroxy-3-aminopropoxy]phenyl]-3phenylpropan-1-one hydrochloride
CAS:1188263-52-6
Propafenone N-Despropyl Impurity (HCl)
PRP50H

1-[2-[(2RS)-2-Hydroxy-3-aminopropoxy]phenyl]-3phenylpropan-1-one oxalate
CAS:93885-20-2
Propafenone N-Despropyl Impurity (Oxalate)
PRP50X

1-[2-[(2RS)-3-CHLORO-2-HYDROXYPROPOXY]PHENYL]-3-PHENYLPROPAN-1-ONE
CAS:165279-79-8
Propafenone EP Impurity E Despropylamino Chloro P
PRP05

1-[2-[(2S)-3,6-Dihydro-6-oxo-2H-pyran-2-yl]-ethyl]-5-(4-fluorophenyl)-2-(1-methylethyl)-N,4-diphenyl-1H-pyrrole-3-carboxamide
CAS:442851-50-5
Atorvastatin 2,3-Anhydro Lactone 2,3-Anhydro Ator
ATV35

1-[2-[(3,4-Dimethylphenyl)thio]phenyl]-piperazine
CAS:1293489-74-3
Vortioxetine Impurity 6
VXT56

1-[2-[(3-Methylphenyl)thio]phenyl]-piperazine
CAS:1293489-69-6
Vortioxetine Impurity 2
VXT52

1-[2-[(3S)-3-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-hydroxy propyl]phenyl]acetate
CAS:184764-13-4
Montelukast (3S)-Hydroxy Methylketone
MTL31

1-[2-[(4-Chlorophenyl)phenylmethoxy]ethyl]piperidine
CAS:3703-76-2
Cloperastine (Base) Cloperastine Racemate
CPS00B

1-[2-[(4-CHLOROPHENYL)PHENYLMETHOXY]ETHYL]PIPERIDINE FENDIZOATE
CAS:85187-37-7
Levocloperastine Racemate (Fendizoate) Cloperasti
LCP70F

1-[2-[(4-CHLOROPHENYL)PHENYLMETHOXY]ETHYL]PIPERIDINE FENDIZOATE
CAS:85187-37-7
Cloperastine (Fendizoate) Cloperastine Racemate (
CPS00F

1-[2-[(4-CHLOROPHENYL)PHENYLMETHOXY]ETHYL]PIPERIDINE HYDROCHLORIDE
CAS:14984-68-0
Cloperastine (HCl) Cloperastine Hydrochloride Cl
CPS00H

1-[2-[(4-Methylphenyl)thio]phenyl]-piperazine
CAS:508233-82-7
Vortioxetine Impurity 3
VXT53

1-[2-[(5-Chloro-2,1,3-benzothiadiazol-4-yl)amino]-4,5-dihydro-1H-imidazol-1-yl]-ethanone
CAS:173532-15-5
Tizanidine USP RC B N-Acetyl Tizanidine
TZN22

1-[2-[[(2RS)-OXIRANYL]METHOXY]PHENYL]-3-PHENYLPROPAN-1-ONE
CAS:22525-95-7
Propafenone EP Impurity C
PRP03

1-[2-[2-(3-ETHYL-4-METHYL-2-OXO-3-PYRROLINE-1-CARBOXAMIDO) ETHYL] PHENYLSULFONYL]-3-(4-METHYLCYCLOHEXYL)UREA
CAS:878480-70-7
Glimepiride EP Impurity I Glimepiride USP RC I G
GLM09

1-[2-[2-ß-D-Glucopyranuronosyl-3-(propylamino)propoxy]phenyl]-3-phenyl-1-propanone
CAS:91411-76-6
Propafenone ß-D-Glucuronide
PRP55

1-[2-Amino-1-(4-hydroxyphenyl) ethyl] cyclohexanol
CAS:149289-29-2
Desvenlafaxine N,N-Didesmethyl Impurity (Base) O-
DVL33B

1-[2-Amino-1-(4-hydroxyphenyl) ethyl] cyclohexanol
CAS:149289-29-2
Venlafaxine O-Desmethyl N,N-Didesmethyl Impurity (
VLF33B

1-[2-Amino-1-(4-hydroxyphenyl) ethyl] cyclohexanol HCl
CAS:135308-76-8
Desvenlafaxine N,N-Didesmethyl Impurity (HCl) O-D
DVL33H

1-[2-Amino-1-(4-hydroxyphenyl) ethyl] cyclohexanol HCl
CAS:135308-76-8
Venlafaxine O-Desmethyl N,N-Didesmethyl Impurity (
VLF33H

1-[2-Amino-1-(4-methoxyphenyl) ethyl] cyclohexanol
CAS:93413-77-5
Venlafaxine EP Impurity C (Base) Dinorvenlafaxine
VLF03B

1-[2-AMINO-1-(4-METHOXYPHENYL) ETHYL] CYCLOHEXANOL HCL
CAS:130198-05-9
Venlafaxine EP Impurity C (HCl) Dinorvenlafaxine
VLF03H

1-[2-Deoxy-5O-(1-methylethyl)-ß-D-erythro-pentofuranosyl]-5-methylpyrimidine-2,4(1H,3H)-dione
Stavudine EP Impurity H Stavudine BP Impurity H
STV08

1-[2-Dimethylamino-1-(4-methoxyphenyl) ethyl] cyclohexane
CAS:1076199-92-2
Venlafaxine EP Impurity G (Base) Deshydroxy Venla
VLF07B

1-[2-DIMETHYLAMINO-1-(4-METHOXYPHENYL) ETHYL] CYCLOHEXANE HCL
CAS:2108968-20-1
Venlafaxine EP Impurity G (HCl) Deshydroxy Venlaf
VLF07H

1-[2-Dimethylamino-1-(4-methoxyphenyl) ethyl] cyclohexanol HCl
CAS:99300-78-4
Venlafaxine (HCl) Venlafaxine Hydrochloride
VLF00H

1-[2-Dimethylamino-1-(4-methoxyphenyl) ethyl] cyclohexanol N-oxide
CAS:1094598-37-4
Venlafaxine N-Oxide Venlafaxine RC 1
VLF41

1-[2-Ethoxy-4-[2-[[(1S)-3-methyl-1-[2-(1-piperidinyl)phenyl]butyl]amino]-2-oxoethyl]benzoate] ß-D-glucopyranuronic acid
CAS:1309112-13-7
Repaglinide Acyl-ß-D-Glucuronide
RPG40

1-[2-Hydroxy-3-[(1-methylethyl)amino]propoxy]-3-[4-(2-methoxyethyl) phenoxy] propan-2-ol
CAS:163685-37-8
Metoprolol EP Impurity J
MTP10

1-[2-Hydroxy-3-[(1-methylethyl)amino]propoxy]-4-naphthalenol
CAS:10476-53-6
Propranolol 4-Hydroxy Impurity (Base)
PPN64B

1-[2-Hydroxy-3-[(1-methylethyl)amino]propoxy]-4-naphthalenol 4-sulfate
CAS:87075-33-0
Propranolol 4-Sulfate Impurity
PPN54

1-[2-Hydroxy-3-[(1-methylethyl)amino]propoxy]-4-naphthalenol hydrochloride
CAS:14133-90-5
Propranolol 4-Hydroxy Impurity (HCl)
PPN64H

1-[2-Hydroxy-3-[(1-methylethyl)amino]propoxy]-5-naphthalenol hydrochloride
CAS:62117-35-5
Propranolol 5-Hydroxy Impurity
PPN55H

1-[2-Hydroxy-3-[(1-methylethyl)amino]propoxy]-7-naphthalenol
CAS:81907-81-5
Propranolol 7-Hydroxy Impurity
PPN57

1-[2-Methylamino-1-(4-methoxyphenyl) ethyl] cyclohexanol
CAS:149289-30-5
Venlafaxine EP Impurity D (Base) Venlafaxine USP
VLF04B

1-[2-Methylamino-1-(4-methoxyphenyl) ethyl] cyclohexanol HCl
CAS:93413-90-2
Venlafaxine EP Impurity D (HCl) Venlafaxine USP
VLF04H

1-[3-(Aminosulfonyl)-5-(butylamino)-4-phenoxybenzoate]-ß-D-glucopyranuronic Acid
CAS:102623-14-3
Bumetanide ß-D-Glucuronide
BMM60

1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofurancarboxylic acid
CAS:440121-09-5
Citalopram Carboxylic Acid Impurity EsCitalopram
CTL18

1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dizohydro-5-isobenzo furancarbonitrile hydrobromide
CAS:59729-32-7
Citalopram Hydrobromide
CTL00H

1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dizohydro-5-isobenzo furancarbonitrile hydrochloride
CAS:85118-27-0
Citalopram hydrochloride
CTL50H

1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-3-hydroxy-1,3-dihydro isobenzofuran-5-carbonitrile
CAS:411221-53-9
EsCitalopram EP Impurity B (Base) Citalopram EP I
ECT02B

1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-3-hydroxy-1,3-dihydro isobenzofuran-5-carbonitrile
CAS:411221-53-9
Citalopram EP Impurity B (Base) EsCitalopram EP I
CTL02B

1-[3-(DIMETHYLAMINO)PROPYL]-1-(4-FLUOROPHENYL)-3-HYDROXY-1,3-DIHYDRO ISOBENZOFURAN-5-CARBONITRILE OXALATE
CAS:1332724-03-4
Citalopram EP Impurity B (Oxalate) EsCitalopram E
CTL02X

1-[3-(DIMETHYLAMINO)PROPYL]-1-(4-FLUOROPHENYL)-3-HYDROXY-1,3-DIHYDRO ISOBENZOFURAN-5-CARBONITRILE OXALATE
CAS:1332724-03-4
EsCitalopram EP Impurity B (Oxalate) Citalopram E
ECT02X

1-[3-(METHYLAMINO)-1-(2-THIENYL)PROPYL]-2-NAPHTHALENOL
CAS:1346599-09-4
Duloxetine 2-Naphthalenol Racemate
DLX35

1-[3-[(EZ)-2-(Tri?uoromethyl)-9H-thioxanthen-9-ylidene]propyl]piperazine
CAS:22365-08-8
Flupentixol EP Impurity C (Base)
FPX03B

1-[3-[(EZ)-2-(Tri?uoromethyl)-9H-thioxanthen-9-ylidene]propyl]piperazine dihydrochloride
Flupentixol EP Impurity C(2HCl)
FPX03H

1-[3-[2-(Methylsulfonyl)-5-oxido-10H-phenothiazin-10-yl]propyl]-4-piperidinecarboxamide
CAS:18181-99-2
Metopimazine Sulfoxide
MPZ51B

1-[3-[4-(3-Chlorophenyl)-1-piperazinyl]propyl]-3-oxo-1,2,4-triazolo[4,3-a]pyridinium
CAS:157072-18-9
Trazodone EP Impurity M (Base) Trazodone Isomer
TZD13B

1-[3-[4-(5-Chloro-2-oxo-2,3-dihydro-1H-benzimidazol-1-yl)piperidin-1-yl] propyl]-3-[3-(2-oxo-2,3-dihydro-1H-benzimidazol-1-yl)propyl]-1,3-dihydro-2H-benzimidazol-2-one
CAS:1346602-50-3
Domperidone EP Impurity E
DPD05

1-[3-[4-Amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-1-piperidinyl]-2,3-dihydroxy-1-propanone
CAS:1226872-27-0
Ibrutinib Dihydrodiol Racemate Ibrutinib M37 Race
IBT92

1-[3-[4-Amino-3-[4-(4-hydroxyphenoxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-1-piperidinyl]-2-propen-1-one
CAS:1288339-18-3
Ibrutinib 4-Hydroxyphenoxy Metabolite
IBT40

1-[3-ACETYL-4-[(2RS)-3-[(1,1-DIMETHYLETHYL)AMINO]-2-HYDROXYPROPOXY]PHENYL]-3-(1,1-DIMETHYLETHYL)UREA
CAS:57471-01-9
Celiprolol EP Impurity C N-Didesethyl N-Tertbutyl
CLL03

1-[3-Azido-2,3-dideoxy-5-O-(triphenylmethyl)-ß-D-erythro-pentofuranosyl]-5-methylpyrimidine-2,4(1H,3H)-dione
CAS:29706-84-1
Zidovudine EP Impurity J Trityl Zidovudine
ZDV10

1-[3’-[(2Z)-2-[1-(3,4-Dimethylphenyl)-1,5-dihydro-3-methyl-5-oxo-4H-pyrazol-4-ylidene-3-14C]hydrazinyl]-2’-hydroxy[1,1’-biphenyl]-3-carboxylate]-ß-D-glucopyranuronic Acid
Eltrombopag Glucuronide
EBP53

1-[3a,17ß-bis(Acetyloxy)-2ß-(morpholin-4-yl)-5a-androstan-16ß-yl]-1-(prop-2-enyl)pyrrolidinium bromide
CAS:122483-73-2
Rocuronium EP Impurity B 3-Acetyl Rocuronium Bro
RCR02

1-[3a,17ß-Bis(acetyloxy)-2ß-(piperidin-1-yl)-5a-androstan-16ß-yl]-1-methylpiperidinium bromide
CAS:50700-72-6
Vecuronium bromide
VCR00

1-[3a,17ß-bis(Acetyloxy)-2ß-(pyrrolidin-1-yl)-5a-androstan-16ß-yl]-1-(prop-2-enyl)pyrrolidinium bromide
CAS:1190105-66-8
Rocuronium EP Impurity F 2-Pyrrolidinyl-3-Acetyl
RCR06

1-[3a,17ß-Dihydroxy-2ß-(morpholin-4-yl)-5a-androstan-16ß-yl]-1-(prop-2-enyl)pyrrolidinium bromide
CAS:119302-86-2
Rocuronium EP Impurity C 17-Desacetyl Rocuronium
RCR03

1-[3a,17ß-Dihydroxy-2ß-(piperidin-1-yl)-5a-androstan-16ß-yl]-1-methylpiperidinium
CAS:73319-30-9
Vecuronium EP Impurity D Vecuronium USP RC C
VCR04

1-[3a-(Acetyloxy)-17ß-hydroxy-2ß-(morpholin-4-yl)-5a-androstan-16ß-yl]-1-(prop-2-enyl)pyrrolidinium bromide
CAS:1190105-63-5
Rocuronium EP Impurity D 3-Acetyl-17-Desacetyl Ro
RCR04

1-[3a-(Acetyloxy)-17ß-hydroxy-2ß-(piperidin-1-yl)-5a-androstan-16ß-yl]-1-methylpiperidinium
CAS:784988-81-4
Vecuronium EP Impurity E
VCR05

1-[4'-[(1',4-Dimethyl-2-propyl[2',6-bi-1H-benzimidazol]-1-yl)methyl][1,1'-biphenyl]-2-carboxylate] ß-D-glucopyranuronic acid
CAS:250780-40-6
Telmisartan Acyl-ß-D-Glucuronide
TST50

1-[4-(1,1-DIMETHYLETHYL)PHENYL]-4-(4-HYDROXYPIPERIDIN-1-YL)BUTAN-1-ONE
CAS:97928-18-2
Ebastine EP Impurity D
EBN04

1-[4-(1,1-Dimethylethyl)phenyl]-4-[4-(diphenylmethoxy)-1-oxidopiperidin-1-yl]butan-1-one
CAS:1256285-71-8
Ebastine trans-N-Oxide Racemate
EBN60

1-[4-(1,1-Dimethylethyl)phenyl]-4-[4-(diphenylmethoxy)-piperidin-1-yl]butan-1-one
CAS:90729-43-4
Ebastine
EBN00

1-[4-(1,1-Dimethylethyl)phenyl]-4-[4-(hydroxydiphenylmethyl)piperidin-1-yl]butan-1-one
CAS:43076-30-8
Terfenadine EP Impurity A Terfenadone
TFN01

1-[4-(1,1-Dimethylethyl)phenyl]-4-[cis-4-(diphenylmethoxy)-1-oxidopiperidin-1-yl]butan-1-one
CAS:1429071-63-5
Ebastine EP Impurity F Ebastine cis-N-Oxide Ebas
EBN06

1-[4-(1,1-Dimethylethyl)phenyl]-4-[trans-4-(diphenylmethoxy)-1-oxidopiperidin-1-yl]butan-1-one
CAS:1429071-65-7
Ebastine EP Impurity G Ebastine trans-N-Oxide
EBN07

1-[4-(1,1-Dimethylpropyl)phenyl]-4-[4-(diphenylmethoxy)piperidin-1-yl]butan-1-one
CAS:1312211-93-0
Ebastine EP Impurity E tert-Amyl Ebastine
EBN05

1-[4-(1-Hydroxy-1-methylethyl)-2-propyl-1-[[2'-(2H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-1H-imidazol-5-yl]ethanone
CAS:1227626-45-0
Olmesartan Methyl Ketone Olmesartan Acetyl Analog
OLM35

1-[4-(2-Aminoethylphenyl)sulfonyl]-3-(cis-3-hydroxycyclohexyl)urea
CAS:1346603-77-7
Glyburide Desbenzamide 3-Hydroxy cis-Isomer (Base)
GLB52B

1-[4-(2-AMINOETHYLPHENYL)SULFONYL]-3-(CIS-3-HYDROXYCYCLOHEXYL)UREA TRIFLUOROACETIC ACID SALT
CAS:1346603-78-8
Glyburide Desbenzamide 3-Hydroxy cis-Isomer (TFA)
GLB52T

1-[4-(2-Aminoethylphenyl)sulfonyl]-3-(trans-4-hydroxycyclohexyl)urea
CAS:1346600-64-3
Glyburide Desbenzamide 4-Hydroxy trans-Isomer (Bas
GLB53B

1-[4-(2-AMINOETHYLPHENYL)SULFONYL]-3-(TRANS-4-HYDROXYCYCLOHEXYL)UREA TRIFLUOROACETIC ACID SALT
CAS:1346600-65-4
Glyburide Desbenzamide 4-Hydroxy trans-Isomer (TFA
GLB53T

1-[4-(2-Methoxyethyl)phenoxy]-3-[(1-methylethyl)nitrosoamino]-2-propanol
CAS:138768-62-4
Metoprolol N-Nitroso Impurity
MTP48

1-[4-(2-Methoxyphenyl)piperazin-1-yl]-3-(1-naphthyloxy)propan-2-ol
CAS:57149-07-2
Naftopidil
NFP00

1-[4-(2-METHYLPROPYL)PHENYL]ETHANONE
CAS:38861-78-8
Ibuprofen EP Impurity E Ibuprofen USP RC C
IBP05

1-[4-(2-N-BOC-2-AMINOETHYLPHENYL)SULFONYL]-3-(CIS-3-HYDROXYCYCLOHEXYL)UREA
CAS:1346598-55-7
Glyburide Impurity 1
GLB41

1-[4-(2-N-BOC-2-AMINOETHYLPHENYL)SULFONYL]-3-(TRANS-4-HYDROXYCYCLOHEXYL)UREA
CAS:1346598-40-0
Glyburide Impurity 2
GLB42

1-[4-(3-CHLOROPROPOXY)-3-METHOXYPHENYL]ETHANONE
CAS:58113-30-7
Iloperidone USP RC A Iloperidone Chloropropoxy Im
ILP21

1-[4-(3-HYDROXYPROPOXY)-3-METHOXYPHENYL]ETHANONE
CAS:207298-39-3
Iloperidone Hydroxypropoxy Impurity
ILP48

1-[4-(4-CHLOROPHENYL)-2-[(2,6-DICHLOROPHENYL)THIO]BUTYL]-1H-IMIDAZOLE
CAS:64872-76-0
Butoconazole
BCZ00B

1-[4-(4-Chlorophenyl)-2-[(2,6-dichlorophenyl)thio]butyl]-1H-imidazole nitrate
CAS:64872-77-1
Butoconazole nitrate
BCZ00N

1-[4-(4-Fluorophenyl)-4-oxobutyl]-4-phenylpiperidin-4-yl decanoate
CAS:1797824-64-6
Haloperidol Decanoate EP Impurity A Dechloro Halo
HPD01B

1-[4-(ACETYLOXY)-3-[(ACETYLOXY)METHYL]PHENYL]ETHANONE
CAS:24085-06-1
Salbutamol RC 3
SAB63

1-[4-[(Dipropylamino)sulfonyl]benzoate]-B-D-glucopyranuronic acid
CAS:34017-15-7
Probenecid Acyl ß-D-Glucuronide
PBN50

1-[4-[(Dipropylamino)sulfonyl]benzoate]-B-D-glucopyranuronic acid benzyl ester
Probenecid Acyl ß-D-Glucuronide Benzyl Ester
PBN60

1-[4-[[(2RS,4RS)-2-(2,4-Dichlorophenyl)-2-[(1H-1,2,4-triazol-1-yl)methyl]-1,3-dioxolan-4-yl]methoxy]phenyl]-4-(1-methylethyl)piperazine
CAS:1486497-66-8
Terconazole EP Impurity A rel-(2S,4S)-Terconazole
TNZ01

1-[4-[[(2RS,4SR)-2-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-yl-methyl)-1,3-dioxolan-4-yl]methoxy]phenyl]piperazine
CAS:67914-61-8
Ketoconazole EP Impurity D N-Desacetyl Ketonazole
KCZ04

1-[4-[[(2RS,4SR)-2-(2,4-Dichlorophenyl)-2-[(1H-1,2,4-triazol-1-yl)methyl]-1,3-dioxolan-4-yl]methoxy]phenyl]-4-(1-methylethyl)piperazine
CAS:67915-31-5
Terconazole
TNZ00

1-[4-[[(2RS,4SR)-2-(2,4-Dichlorophenyl)-2-[(4H-1,2,4-triazol-4-yl)methyl]-1,3-dioxolan-4-yl]methoxy]phenyl]-4-(1-methylethyl)piperazine
Terconazole EP Impurity B N4-Triazolyl Terconazol
TNZ02

1-[4-[[(3R,4R)-1-Acetyl-4-methyl-3-piperidinyl]methylamino]-7H-pyrrolo[2,3-d]pyrimidin-7-yl]ethanone
CAS:1608117-47-0
Tofacitinib Impurity 9 Tofacitinib Diacetyl Impur
TFC99B

1-[4-[[2-(1-Methylethoxy)ethoxy]methyl]phenoxy]-3-[(1-methylethyl) amino]-2-propanol
CAS:66722-44-9
Bisoprolol (Base)
BSP00B

1-[4-[[2-(1-Methylethoxy)ethoxy]methyl]phenoxy]-3-[(1-methylethyl) amino]-2-propanol fumarate salt
CAS:104344-23-2
Bisoprolol (Fumarate)
BSP00F

1-[4-[[2-(1-Methylethoxy)ethoxy]methyl]phenoxy]-3-[(1-methylethyl)-N-formylamino]-2-propanol
CAS:1447715-45-8
Bisoprolol N-Formyl Impurity
BSP50B

1-[4-[[2-(1-Methylethoxy)ethoxy]methyl]phenoxy]-3-[(1-methylethyl)-N-nitrosoamino]-2-propanol
CAS:2820170-76-9
Bisoprolol N-Nitroso Impurity
BSP48

1-[4-[[6-O-(6-Deoxy-a-L-mannopyranosyl)-ß-D-glucopyranosyl]oxy]-2,6-dihydroxyphenyl]-3-(3-hydroxy-4-methoxyphenyl)propan-1-one
CAS:35573-79-6
Hesperidin Dihydrochalcone Neohesperidin Dihydroc
HSP50

1-[4-[1-(5,6,7,8-Tetrahydro-3,5,5,8,8-pentamethyl-2-naphthalenyl)ethenyl]benzoate] ß-D-glucopyranuronic acid
CAS:198700-33-3
Bexarotene Acyl-ß-D-Glucuronide
BXR60

1-[4-[1-[4-(Aminosulfonyl)phenyl]-3-(trifluoromethyl)-1H-pyrazol-5-yl]benzoate] ß-D-glucopyranuronic acid
CAS:264236-79-5
Celecoxib Carboxylic Acid Acyl-ß-D-Glucuronide
CLC47

1-[4-[2-(3-ETHYL-4-METHYL-2-OXO-3-PYRROLINE-1-CARBOXAMIDO) ETHYL] PHENYLSULFONYL]-3-(4-CIS-METHYLCYCLOHEXYL)UREA
CAS:684286-46-2
Glimepiride EP Impurity A Glimepiride USP RC A G
GLM01

1-[4-[2-(DIMETHYLAMINO)ETHOXY]PHENYL]-1,2-DIPHENYLBUTAN-1-OL
CAS:748-97-0
Tamoxifen EP Impurity B
TMX02B

1-[4-[2-hydroxy-2-[4-hydroxy-3-(hydroxymethyl)phenyl]ethoxy]-3-(hydroxy methyl)phenyl]-2-[[6-(3-phenylbutoxy)hexyl]amino]ethanol
CAS:1391052-04-2
Salmeterol EP Impurity D Salmeterol O-Alkyl Impur
SAL04

1-[4-[2-HYDROXY-3-[(1-METHYLETHYL)AMINO]PROPOXY]-1H-INDOL-1-YL]-3-[(1-METHYLETHYL)AMINO]PROPAN-2-OL
CAS:130115-63-8
Pindolol EP Impurity B
PDL02

1-[4-[3-[4-(1,2-Benzisoxazol-3-yl)-1-piperidinyl]propoxy]-3-methoxyphenyl] ethanone
CAS:133454-46-3
Iloperidone Desfluoro Impurity
ILP45

1-[4-[3-[4-(4-Fluoro-2-hydroxybenzoyl)-1-piperidinyl]propoxy]-3-methoxy phenyl]-ethanone
CAS:170170-50-0
Iloperidone Diketo Impurity
ILP46

1-[4-[3-[4-(6-FLUORO-1,2-BENZISOXAZOL-3-YL)-1-PIPERIDINYL]PROPOXY]-3-METHOXYPHENYL]ETHANONE
CAS:133454-47-4
Iloperidone
ILP00

1-[4-[4-(1,1-Dimethylethyl)phenyl]but-3-enyl]-4-(diphenylmethylene)piperidine
Terfenadine EP Impurity F
TFN06

1-[4-[4-(2,3-Dichlorophenyl)-1-piperazinyl]butyl]-1,2,3,4-tetrahydro-2,7-quinolinediol
CAS:1391054-74-2
Aripiprazole Quinolinediol Impurity
ARP51

1-[4-Cyano-4-(4-fluorophenyl)cyclohexyl]-4-phenyl-4-piperidinecarboxylic acid
CAS:80139-90-8
Levocabastine USP RC A (Base) Desmethyl Cabastine
LVC21B

1-[4-Cyano-4-(4-fluorophenyl)cyclohexyl]-4-phenyl-4-piperidinecarboxylic acid hydrochloride
CAS:80139-91-9
Levocabastine USP RC A (HCl) Desmethyl Cabastine
LVC21H

1-[4-Hydroxy-3-(hydroxymethyl)butyl] -7-imino-1,3,6,8-tetraazaspiro[4.4] nonane-2,4,9-trione
Penciclovir Impurity 5
PCV55

1-[4-Hydroxy-3-(hydroxymethyl)phenyl]-2-[(4-phenylbutyl)amino] ethanol
CAS:1798014-51-3
Salmeterol EP Impurity A (Base) Salmeterol USP RC
SAL01B

1-[4-Hydroxy-3-(hydroxymethyl)phenyl]-2-[(4-phenylbutyl)amino] ethanol formate
Salmeterol EP Impurity A (Formate) Salmeterol USP
SAL01F

1-[4-HYDROXY-3-(HYDROXYMETHYL)PHENYL]-2-[[6-(1-METHYL-3-PHENYLPROPOXY) HEXYL] AMINO]ETHANOL
CAS:108928-81-0
Salmeterol EP Impurity E Salmeterol USP RC B
SAL05B

1-[4-HYDROXY-3-(HYDROXYMETHYL)PHENYL]-2-[[6-(2-PHENYLETHOXY)HEXYL]AMINO] ETHANOL
CAS:94749-02-7
Salmeterol EP Impurity B Salmeterol Phenylethoxy
SAL02B

1-[4-HYDROXY-3-(HYDROXYMETHYL)PHENYL]-2-[[6-(3-PHENYLPROPOXY)HEXYL]AMINO] ETHANOL
CAS:94749-11-8
Salmeterol EP Impurity C (Base) Salmeterol Pheny
SAL03B

1-[4-Hydroxy-3-(hydroxymethyl)phenyl]-2-[[6-(3-phenylpropoxy)hexyl]amino] ethanol formate
Salmeterol EP Impurity C (Formate) Salmeterol Ph
SAL03F

1-[4-Hydroxy-3-(Hydroxymethyl)phenyl]-2-[[6-(4-phenylbutoxy)hexyl] amino] ethanol 1-hydroxynaphthalene-2-carboxylate
CAS:94749-08-3
Salmeterol xinafoate
SAL00X

1-[4-hydroxy-3-[[[2-hydroxy-2-[4-hydroxy-3-(hydroxymethyl)phenyl]ethyl] [6-(4-phenylbutoxy)hexyl]amino]methyl]phenyl]-2-[[6-(4-phenylbutoxy)hexyl] amino]ethanol
CAS:1391051-88-9
Salmeterol EP Impurity G Salmeterol N-Alkyl Impu
SAL07B

1-[5-(Aminosulfonyl)-4-chloro-2-[(2-furanylmethyl)amino]benzoate] -ß-D-glucopyranuronic acid
CAS:72967-59-0
Furosemide Acyl Glucuronide
FRS50

1-[5-(Aminosulfonyl)-4-chloro-2-[(2-furanylmethyl)amino]benzoate]-ß-D-glucopyranuronic acid allyl ester
Furosemide Acyl Glucuronide Allyl Ester
FRS51

1-[5-[4'-[(2-Butyl-4-oxo-1,3-diazaspiro[4.4]non-1-en-3-yl)methyl][1,1'-biphenyl]-2-yl]-2H-tetrazol-2-yl]-1-deoxy-ß-D-glucopyranuronic acid
CAS:160205-58-3
Irbesartan N-ß-D-Glucuronide
IST60

1-[5-Amino-2-[(2RS)-2-hydroxy-3-[(1-methylethyl) amino] propoxy] phenyl] ethanone
CAS:57898-80-3
Acebutolol EP Impurity D
ABT04B

1-[5-Amino-2-[(2RS)-3-[(1,1-dimethylethyl)amino]-2-hydroxypropoxy]phenyl]ethanone
CAS:56980-94-0
Celiprolol EP Impurity A
CLL01

1-[5’-Deoxy-3-O-(5’-deoxy-a-D-ribofuranosyl)-ß-D-ribofuranosyl]-5-fluoro-2-oxo-1,2-dihydropyrimidin-4-yl]carbamic acid pentyl ester
CAS:1262133-68-5
Capecitabine USP RC I Capecitabine USP Impurity I
CPC29

1-[6-(Carbamimidoylamino)hexyl]-5-(4-chlorophenyl)biguanide
CAS:152504-10-4
Chlorhexidine Digluconate EP Impurity N (Base)
CXG14B

1-[6-(Carbamimidoylamino)hexyl]-5-(4-chlorophenyl)biguanide formate
Chlorhexidine Digluconate EP Impurity N (Formate)
CXG14F

1-[6-[(2-Phenylethyl)amino]hexyl]-1H-indole-5,6-diol
Dopexamine EP Impurity K
DPX11

1-[6-[(2-Phenylethyl)amino]hexyl]-2,3-dihydro-1H-indole-5,6-dione
Dopexamine EP Impurity I
DPX09

1-[a-(2-Chlorophenyl)-6,7-dihydrothieno[3,2-c]pyridine-5(4H)-acetate] ß-D-glucopyranuronic acid
CAS:1314116-53-4 (S)
Clopidogrel Acyl-beta-D-Glucuronide
CPG90B

1-[bis(4-Fluorophenyl)methyl]-4-[(2E)-3-phenylprop-2-enyl]piperazine
CAS:52468-60-7
Flunarizine (Base)
FNZ00B

1-[bis(4-Fluorophenyl)methyl]-4-[(2E)-3-phenylprop-2-enyl]piperazine dihydrochloride
CAS:30484-77-6
Flunarizine (2HCl) Flunarizine Dihydrochloride
FNZ00H

1-[bis(4-Fluorophenyl)methyl]-4-[(2Z)-3-phenylprop-2-enyl]piperazine
CAS:693765-11-6
Flunarizine EP Impurity D (Z)-Flunarizine
FNZ04B

1-[BIS(4-FLUOROPHENYL)METHYL]PIPERAZINE
CAS:27469-60-9
Flunarizine EP Impurity A
FNZ01B

1-[cis-4-Cyano-4-(4-fluorophenyl)cyclohexyl]-3-methyl-4-phenylpyridinium
Levocabastine EP Impurity K
LVC11

1-[cis-4-Cyano-4-(4-fluorophenyl)cyclohexyl]-4-phenylpiperidine-4-carboxylic acid,
Levocabastine EP Impurity D
LVC04

1-{[(6R,7R)-7-Amino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl}-1-methylpyrrolidin-1-ium
CAS:110026-16-9
Cefepime EP Impurity E (Base) Cefepime USP RC E
CPM05B

1-{[(6R,7R)-7-AMINO-2-CARBOXY-8-OXO-5-THIA-1-AZABICYCLO[4.2.0]OCT-2-EN-3-YL]METHYL}-1-METHYLPYRROLIDIN-1-IUM CHLORIDE
CAS:103121-85-3
Cefepime EP Impurity E (HCl) Cefepime USP RC E (H
CPM05H

1-{[(6R,7R)-7-Amino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl}-1-methylpyrrolidin-1-ium iodide
CAS:111390-01-3
Cefepime EP Impurity E (HI) Cefepime USP RC E (HI
CPM05X

1-{[4-(2-Cyanophenyl)phenyl]methyl}-2-ethoxy-1H-1,3-benzodiazole-7-carboxylic acid
CAS:632322-61-3
Azilsartan Impurity 3
AZS73

1-a-D-Ribofuranosyl-1H-1,2,4-triazole-3-carboxamide
CAS:57198-02-4
Ribavirin EP Impurity B a-Ribavirin
RBV02

1-ACETYL-1-(4-ETHOXYPHENYL)-3,3-DIETHYLUREA
Celiprolol EP Impurity I
CLL09

1-ACETYL-2-[(2,6-DICHLOROPHENYL)AMINO]-4,5-DIHYDRO-1H-IMIDAZOLE
CAS:54707-71-0
Clonidine EP Impurity B Clonidine USP RC A Acety
CLN02

1-Acetyl-3-[[(2R)-1-methyl-2-pyrrolidinyl]methyl]-5-[2-(phenylsulfonyl)ethenyl]- 1H-indole
CAS:188113-71-5
Eletriptan N-Acetyl Dehydro Impurity
ETT52B

1-Acetyl-4-(8-chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene)-piperidine
CAS:117796-52-8
Loratadine N-Acetyl Impurity Desloratadine N-Acet
LRT11

1-Acetyl-4-[4-[[(2RS,4RS)-2-(2,4-dichlorophenyl)-2-(1H-imidazol-1-yl-methyl)-1,3-dioxolan-4-yl]methoxy]phenyl]-piperazine
CAS:83374-59-8
Ketoconazole EP Impurity C Ketoconazole 4-Epimer
KCZ03

1-Acetyl-4-[4-[[(2RS,4SR)-2-(2,4-dichlorophenyl)-2-(1H-imidazol-1-yl- methyl)-1,3-dioxolan-4-yl]methoxy]phenyl]-1,2,3,4-tetrahydropyrazine
CAS:254912-63-5
Ketoconazole EP Impurity A 2,3-Dehydro Ketoconazo
KCZ01

1-Acetyl-4-[4-[[(2RS,4SR)-2-(2,4-dichlorophenyl)-2-(1H-imidazol-1-yl- methyl)-1,3-dioxolan-4-yl]methoxy]phenyl]-piperazine
CAS:65277-42-1
Ketoconazole
KCZ00

1-Acetyl-4-[4-[[(2RS,4SR)-2-(2,4-dichlorophenyl)-2-(1H-imidazol-1-yl-methyl)-1,3-dioxolan-4-yl]methoxy]-3-[4-(4-acetylpiperazin-1-yl)phenoxy] phenyl]piperazine
CAS:1346598-39-7
Ketoconazole EP Impurity B
KCZ02

1-ACETYLIMIDAZOLIDIN-2-ONE
CAS:5391-39-9
Clonidine EP Impurity A
CLN01

1-ACETYLIMIDAZOLIDINE-2-THIONE
CAS:5391-52-6
Tizanidine USP RC C
TZN23

1-Amino-3-(1-naphthalenyloxy)-2-propanol hydrochloride
CAS:62618-09-1
Propranolol N-Desisopropyl Impurity Nor Propranolo
PPN56H

1-AMINO-3-(3,5-DIMETHYLPHENOXY)PROPAN-2-OL
CAS:66766-07-2
Metaxalone USP RC B
MXL22

1-Amino-3-adamantanol 3-Amino-1-adamantanol
CAS:702-82-9
Vildagliptin Amino Alcohol Impurity
VDG51

1-AMINO-3-NITROADAMANTANE
CAS:243145-00-8
Vildagliptin Impurity 1
VDG61

1-AMINO-5,8-DIHYDROXY-4-(2-(2-HYDROXYETHYLAMINO)ETHYLAMINO)ANTHRACENE-9,10-DIONE
CAS:89991-52-6
Mitoxantrone EP Impurity A
MXT01

1-AMINOIMIDAZOLIDINE-2,4-DIONE
CAS:2/6/6301
Hydantoin 1-Amino (Base)
HDT51B

1-AMINOIMIDAZOLIDINE-2,4-DIONE HYDROCHLORIDE
CAS:2827-56-7
Hydantoin 1-Amino (HCl)
HDT51H

1-AMINOINDAN
CAS:34698-41-4
Rasagiline RC 4 (Base)
RSG64B

1-AMINOINDAN HCL
CAS:70146-15-5
Rasagiline RC 4 (HCl)
RSG64H

1-Azepan-1-yl-3-[(4-methylphenyl)sulfonyl]urea
CAS:1156-19-0
Tolbutamide EP Impurity C Tolazamide
TBM03

1-BENZHYDRYLAZETIDIN-3-OL
CAS:18621-17-5
Azelnidipine Impurity 2
AZP52

1-Benzisoxazol-3-yl-methanesulfonamide
CAS:68291-97-4
Zonisamide
ZNS00

1-Benzisoxazol-3-yl-N-methylmethanesulfonamide
CAS:68292-02-4
Zonisamide N-Methyl Impurity (USP)
ZNS32

1-Benzo[b]thien-2-yl-ethanone
CAS:22720-75-8
Zileuton USP RC C 2-Acetylbenzothiophene
ZLT23

1-Benzyl-1,2-dihydroindazol-3-one
CAS:2215-63-6
Benzydamine EP Impurity C
BDN03B

1-Benzyl-1H-pyrazolo[3,4-b]pyridine-3-carboxamidine
Riociguat RC 7
RCG67

1-Benzyl-2-(1-chloropropan-2-yloxy)benzene
Benproperine RC 3
BNP63

1-BENZYL-2-(2-CHLOROPROPOXY)BENZENE
CAS:85909-36-0
Benproperine RC 9
BNP69

1-Benzyl-2-(3-(dimethylamino)propyl)-1,2-dihydroindazol-3-one
CAS:52413-42-0
Benzydamine EP Impurity E (Base)
BDN05B

1-Benzyl-2-(3-(dimethylamino)propyl)-1,2-dihydroindazol-3-one hydrochloride
CAS:85284-06-6
Benzydamine EP Impurity E (HCl)
BDN05H

1-BENZYL-2-METHYL-1H-IMIDAZOLE-5-CARBALDEHYDE
CAS:39269-74-4
Tegoprazan RC 6
TGP66

1-Benzyl-3,7-dimethyl-3,7-dihydro-1H-purine-2,6-dione
CAS:55247-90-0
Pentoxifylline EP Impurity I
PTX09

1-Benzyl-3-(3-(dimethylamino)propoxy)-1H-indazol-5-ol
CAS:39860-89-4
Benzydamine 5-Hydroxy Impurity (HCl)
BDN51H

1-Benzyl-3-(3-(dimethylamino)propoxy)-1H-indazol-5-ol
CAS:36504-72-0
Benzydamine 5-Hydroxy Impurity (Base)
BDN51B

1-Benzyl-3-chloro-2-(2-chloropropoxy)benzene
Benproperine RC 4
BNP64

1-Benzyl-4-(1-(2,3-dimethylphenyl)ethyl)-1H-imidazole
Medetomidine RC2
MDT62

1-Benzyl-4-(1-(2,3-dimethylphenyl)vinyl)-1H-imidazole
CAS:1311376-20-1
Medetomidine RC3
MDT63

1-BENZYL-4-(5,6-DIMETHOXY-1-OXOINDAN-2-YL)METHYLPYRIDINIUM BROMIDE
CAS:231283-82-2
Donepezil EP Impurity E
DNP05

1-Benzyl-4-[(5,6-dimethoxyindan-2-yl)methyl] piperidine
CAS:844694-84-4
Donepezil Deoxy Impurity (Base)
DNP33B

1-Benzyl-4-[(5,6-dimethoxyindan-2-yl)methyl] piperidine HCl
CAS:1034439-57-0
Donepezil Deoxy Impurity (HCl)
DNP33H

1-BENZYL-4-[(5,6-DIMETHOXYINDEN-2-YL)METHYL] PIPERIDINE
CAS:120013-45-8
Donepezil Dehydro Deoxy Impurity (USP) Donepezil
DNP32

1-BENZYL-4-HYDROXY-2-METHYL-1H-BENZO[D]IMIDAZOLE-6-CARBOXYLIC ACID
CAS:1640981-19-6
Tegoprazan RC 5
TGP65

1-BENZYL-4-HYDROXY-N,N,2-TRIMETHYL-1H-BENZO[D]IMIDAZOLE-6-CARBOXAMIDE
CAS:1640981-20-9
Tegoprazan RC 4
TGP64

1-BENZYL-5-[1-(2,3-DIMETHYLPHENYL)ETHYL]-1H-IMIDAZOLE
CAS:2250242-52-3
Medetomidine N-Benzyl Impurity
MDT55

1-Benzyl-5-[1-(2,3-dimethylphenyl)vinyl]-1H-imidazole
CAS:2250243-56-0
Medetomidine N-Benzyl Vinyl Analog
MDT56

1-BENZYL-5-ETHOXYIMIDAZOLIDINE-2,4-DIONE
CAS:65855-02-9
Hydantoin 1-Benzyl 5-Ethoxy
HDT52

1-BENZYLPIPERIDIN-3-YL 3-OXOBUTANOATE
CAS:85387-34-4
Benidipine Impurity 2
BDP52

1-BENZYLPIPERIDIN-4-AMINE
CAS:50541-93-0
Clebopride EP Impurity B Lomitapide BPA Impurity
CBP02

1-BENZYLPIPERIDIN-4-AMINE
CAS:50541-93-0
Lomitapide BPA Impurity Clebopride EP Impurity B
LPD51

1-beta-D-Ribofuranosyl-3-guanylurea
CAS:2508-80-7
Azacitidine USP RC C (Base) Azacitidine Guanylure
AZC23B

1-beta-D-Ribofuranosyl-3-guanylurea picrate salt
CAS:4336-46-3
Azacitidine USP RC C (Picrate)
AZC23P

1-BROMO-2-(BROMOMETHYL)-4,5-DIMETHOXYBENZENE
CAS:53207-00-4
Gemifloxacin RC 1
GMF61

1-BROMO-2-(CHLOROMETHYL)-4,5-DIMETHOXYBENZENE
CAS:54370-01-3
Pinaverium Impurity 2
PVB62

1-BROMO-3,5,7-TRIMETHYLADAMANTANE
CAS:53398-55-3
Memantine Impurity 3
MMT63

1-BROMO-3,5-DIMETHYLADAMANTANE
CAS:941-37-7
Memantine USP RC D
MMT24

1-BROMO-3-METHYLADAMANTANE
CAS:702-77-2
Amantadine Impurity 1
AMN51

1-BROMO-4-HYDROXY-7-PHENOXYISOQUINOLINE-3-CARBOXYLIC ACID
Roxadustat RC 7
RXD67

1-BROMO-5-CHLORO-1-(2-FLUOROPHENYL)PENTAN-2-ONE
CAS:1373350-58-3
Prasugrel Impurity 7
PRS77

1-Butyl-1-oxido-N-(2,6-dimethylphenyl)-2-piperidinecarboxamide
CAS:1346597-81-6
Bupivacaine N-Oxide
BVC50B

1-BUTYL-1-OXIDO-N-(2,6-DIMETHYLPHENYL)-2-PIPERIDINECARBOXAMIDE HYDROCHLORIDE
CAS:1796927-05-3
Bupivacaine N-Oxide HCl
BVC50H

1-Butyl-3-(4-(hydroxymethyl)phenylsulfonyl)urea
CAS:5719-85-7
Tolbutamide Hydroxy
TBM53

1-Butyl-3-[(4-methylphenyl)sulfonyl]urea
CAS:64-77-7
Tolbutamide
TBM00

1-Butyl-3-[[4-[2-[(5-chloro-2-methoxybenzoyl)amino]ethyl]phenyl]sulfonyl]urea
CAS:38160-73-5
Glyburide EP Impurity D Glibenclamide EP Impurity
GLB04

1-BUTYLIMIDAZOLIDINE-2,4-DIONE
CAS:33599-32-5
Hydantoin 1-Butyl
HDT54

1-CARBAMIMIDOYLUREA
CAS:141-83-3
Metformin RC 1
MTF61B

1-Carbamimidoylurea hydrochloride
CAS:926-72-7
Metformin RC 1 (HCl)
MTF61H

1-CARBAMOYLGUANIDINE
CAS:141-83-3
Metformin Guanylurea Impurity (Base) Guanylurea
MTF51B

1-Carbamoylguanidine HCl
CAS:926-72-7
Metformin Guanylurea Impurity (HCl) Guanylurea HC
MTF51H

1-Carbamoylguanidine hemisulfate
CAS:591-01-5
Metformin Guanylurea Impurity (Hemisulfate) Guany
MTF51S

1-Chloro-1-deoxy-2,34,5-di-O-isopropylidene-ß-D-fructopyranose
CAS:32785-90-3
Topiramate Impurity 1
TPM61

1-CHLORO-10H-PHENOTHIAZINE
CAS:1910-85-6
Perphenazine Impurity 9
PPZ79

1-Chloro-2-(4-nitrophenylsulfonyl)benzene
CAS:42085-93-8
Dapsone RC 3
DPS63

1-Chloro-2-(chlorodiphenylmethyl)-benzene
CAS:42074-68-0
Clotrimazole EP Impurity C 2-Chlorotrityl Chlorid
CLT03

1-Chloro-2-hydroxy-3-[4-(2-methoxyethyl)phenoxy]-propane
CAS:56718-76-4
Metoprolol USP RC B
MTP22

1-CHLORO-3,5-DIMETHYLADAMANTANE
CAS:707-36-8
Memantine USP RC C
MMT23

1-Chloro-3-(2-methyl-4-nitro-1H-imidazol-1-yl)propan-2-ol
CAS:14419-11-5
Ornidazole 4-Nitro Isomer Ornidazole N-Isomer
ODZ54

1-CHLORO-3-(2-METHYL-5-NITRO-1H-IMIDAZOL-1-YL)PROPAN-2-OL
CAS:16773-42-5
Ornidazole
ODZ00

1-CHLORO-3-(NAPHTHALEN-1-YLOXY)PROPAN-2-OL
CAS:20133-93-1
Propranolol RC 1
PPN61

1-CHLORO-3-PHENYLPROPANE
CAS:104-52-9
Alverine EP Impurity A
AVR01

1-Chloro-4,4-difluoro-N-[(1S)-3-[(3-exo)-3-[3-methyl-5-(1-methylethyl)-4H-1,2,4-triazol-4-yl]-8- azabicyclo[3.2.1]oct-8-yl]-1-phenylpropyl]-cyclohexane carboxamide
Maraviroc JCS Impurity-5 Chloro Maraviroc
MRV55

1-Chloro-4-(4-chlorophenylsulfonyl)benzene
CAS:80-07-9
Dapsone RC 1
DPS61

1-CHLORO-4-(CHLOROMETHYL)BENZENE
CAS:104-83-6
Pitolisant RC 8
PLS68

1-CHLORO-4-METHOXY-2-NITROBENZENE
CAS:10298-80-3
Iguratimod Impurity 4
ITM64

1-CHLOROPHTHALAZINE
CAS:5784-45-2
Hydralazine Chloro Impurity
HDL52

1-CHLOROTRICYCLO[3.3.1.13,7]DECANE
CAS:935-56-8
Amantadine EP Impurity A 1-Chloroadamantane
AMN01

1-Cyano-3-(1-methylethyl)guanidine
CAS:44830-55-9
Proguanil EP Impurity A Proguanil USP RC A
PGN01B

1-Cyanocyclohexaneacetonitrile 1-Cyanomethyl-1-cyclohexanenitrile
CAS:4172-99-0
Gabapentin Di-Nitrile Impurity
GBP31

1-CYANOGUANIDINE
CAS:461-58-5
Metformin EP Impurity A Metformin USP RC A
MTF01B

1-CYCLOHEXYL-1-PHENYL-3-(PIPERIDIN-1-YL)PROPAN-1-OL HYDROCHLORIDE
CAS:52-49-3
Benzhexol Hydrochloride Trihexyphenidyl HCl
BZX00H

1-Cyclohexyl-1-phenyl-3-(piperidin-1-yl)propan-1-ol N-oxide
CAS:161564-79-0
Benzhexol N-Oxide
BZX60B

1-CYCLOHEXYL-3-(P-SULFAMOYLPHENETHYL)UREA
CAS:10080-05-4
Glipizide EP Impurity H Glipizide BP Impurity H
GLP08

1-Cyclohexyl-3-[[4-[2-[(3,5-dichloro-2-methoxybenzoyl)amino]ethyl]phenyl]sulfonyl]urea
CAS:57334-89-1
Glyburide EP Impurity E Glibenclamide EP Impurity
GLB05

1-Cyclohexyl-3-[[4-[2-[(cyclohexylcarbamoyl)amino]ethyl]phenyl]sulfonyl]urea
CAS:10079-35-3
Glyburide EP Impurity C Glibenclamide EP Impurity
GLB03

1-Cyclohexyl-3-[[4-[2-[[(6-methylpyrazin-2-yl)carbonyl]amino]ethyl]phenyl] sulphonyl]urea
CAS:66375-96-0
Glipizide EP Impurity E Glipizide BP Impurity E
GLP05

1-Cyclohexyl-3-[[p-[2-(5-methylpyrazinecarboxamido)ethyl]phenyl] sulfonyl]urea
CAS:29094-61-9
Glipizide
GLP00

1-CYCLOPROPYL-2-(2-FLUOROPHENYL)ETHANE-1,2-DIONE
CAS:1391054-37-7
Prasugrel EP Impurity G Prasugrel Diketone (USP)
PRS07

1-Cyclopropyl-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-2-(2-fluoro phenyl)ethanone
CAS:201049-78-7
Prasugrel Desacetyloxy Impurity (Base) 2-Desaceto
PRS63B

1-Cyclopropyl-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-2-(2-fluoro phenyl)ethanone HCl
CAS:1618108-01-2
Prasugrel Desacetyloxy Impurity (HCl) 2-Desacetox
PRS63H

1-CYCLOPROPYL-4-OXO-7-(PIPERAZIN-1-YL)-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:93107-11-0
Ciprofloxacin EP Impurity B (Base) Desfluoro Cipr
CPF02B

1-CYCLOPROPYL-4-OXO-7-(PIPERAZIN-1-YL)-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID HYDROCHLORIDE
CAS:2727369-47-1
Ciprofloxacin EP Impurity B (HCl) Desfluoro Cipro
CPF02H

1-CYCLOPROPYL-5,6,7,8-TETRAFLUORO-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:106890-70-4
Orbifloxacin EP Impurity F
OBX06

1-Cyclopropyl-5,7-bis[(3R,5S)-3,5-dimethylpiperazin-1-yl]6,8-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
Orbifloxacin EP Impurity A
OBX01

1-Cyclopropyl-5-[(3R,5S)-3,5-dimethylpiperazin-1-yl]-6,7,8-trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
Orbifloxacin EP Impurity E
OBX05

1-CYCLOPROPYL-6,7,8-TRIFLUORO-1,4-DIHYDRO-4-OXO-3-QUINOLINE CARBOXYLIC ACID
CAS:94695-52-0
Moxifloxacin Trifluoro Acid Impurity
MXF17

1-CYCLOPROPYL-6,7,8-TRIFLUORO-1,4-DIHYDRO-4-OXO-3-QUINOLINE CARBOXYLIC ACID ETHYL ESTER
CAS:94242-51-0
Moxifloxacin Trifluoro Ethyl Ester
MXF37

1-CYCLOPROPYL-6,7-DIFLUORO-1,4-DIHYDRO-4-OXOQUINOLINE-3-CARBOXYLIC ACID
CAS:93107-30-3
Moxifloxacin Difluoro Acid Impurity
MXF33

1-Cyclopropyl-6,7-difluoro-1,4-dihydro-8-ethoxy-4-oxo-3-quinoline carboxylic acid
CAS:143158-55-8
Moxifloxacin Difluoro Ethoxy Acid Impurity
MXF16

1-CYCLOPROPYL-6,7-DIFLUORO-1,4-DIHYDRO-8-ETHOXY-4-OXO-3-QUINOLINE CARBOXYLIC ACID ETHYL ESTER
CAS:172602-83-4
Moxifloxacin Difluoro Ethoxy Ethyl Ester
MXF36

1-CYCLOPROPYL-6,7-DIFLUORO-1,4-DIHYDRO-8-HYDROXY-4-OXO-3-QUINOLINE CARBOXYLIC ACID
CAS:154093-72-8
Moxifloxacin Difluoro Hydroxy Acid Impurity Gatif
MXF14

1-CYCLOPROPYL-6,7-DIFLUORO-1,4-DIHYDRO-8-HYDROXY-4-OXO-3-QUINOLINE CARBOXYLIC ACID ETHYL ESTER
CAS:452092-31-8
Moxifloxacin Difluoro Hydroxy Ethyl Ester
MXF34

1-CYCLOPROPYL-6,7-DIFLUORO-1,4-DIHYDRO-8-METHOXY-4-OXO-3-QUINOLINE CARBOXYLIC ACID
CAS:112811-72-0
Moxifloxacin Difluoro Methoxy Acid Impurity Gatif
MXF15

1-CYCLOPROPYL-6,7-DIFLUORO-1,4-DIHYDRO-8-METHOXY-4-OXO-3-QUINOLINE CARBOXYLIC ACID ETHYL ESTER
CAS:112811-71-9
Moxifloxacin Difluoro Methoxy Ethyl Ester
MXF35

1-CYCLOPROPYL-6,7-DIFLUORO-8-HYDROXY-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:154093-72-8
Gatifloxacin USP Impurity B Moxifloxacin Difluoro
GTF32

1-CYCLOPROPYL-6,7-DIFLUORO-8-METHOXY-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:112811-72-0
Gatifloxacin USP Impurity C Moxifloxacin Difluoro
GTF33

1-CYCLOPROPYL-6,7-DIFLUORO-8-METHOXY-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:112811-72-0
Ciprofloxacin Difluoro 8-Methoxy Impurity Gatiflo
CPF38

1-CYCLOPROPYL-6,8-DIFLUORO-7-(3-METHYLPIPERAZIN-1-YL)-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:103460-89-5
Gatifloxacin Desmethoxy 8-Fluoro
GTF50

1-CYCLOPROPYL-6,8-DIFLUORO-7-[(4AS,7AS)-OCTAHYDRO-6H-PYRROLO[3,4-B]PYRIDIN-6-YL]-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:151213-15-9
Moxifloxacin EP Impurity A (Base) Moxifloxacin US
MXF01B

1-Cyclopropyl-6,8-difluoro-7-[(4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid HCl
Moxifloxacin EP Impurity A (HCl) Moxifloxacin USP
MXF01H

1-CYCLOPROPYL-6,8-DIMETHOXY-7-[(4AS,7AS)-OCTAHYDRO-6H-PYRROLO[3,4-B]PYRIDIN-6-YL]-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:1029364-73-5
Moxifloxacin EP Impurity B (Base) Moxifloxacin US
MXF02B

1-Cyclopropyl-6,8-dimethoxy-7-[(4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid HCl
Moxifloxacin EP Impurity B (HCl) Moxifloxacin USP
MXF02H

1-Cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-(3-oxo-1-piperazinyl)-3-quinolinecarboxylic acid
CAS:103237-52-1
Ciprofloxacin Lactam Oxociprofloxacin
CPF50

1-CYCLOPROPYL-6-FLUORO-1,4-DIHYDRO-7-(3-METHYL-1-PIPERAZINYL)-4-OXO-3-QUINOLINECARBOXYLIC ACID
CAS:93107-32-5
Gatifloxacin Desmethoxy Impurity (Base)
GTF52B

1-Cyclopropyl-6-fluoro-1,4-dihydro-7-(3-methyl-1-piperazinyl)-4-oxo-3-quinolinecarboxylic acid trifluoroacetic acid salt
CAS:1215348-50-7
Gatifloxacin Desmethoxy Impurity (TFA Salt)
GTF52T

1-Cyclopropyl-6-fluoro-1,4-dihydro-8-methoxy-7-(3-methyl-1-piperazinyl)-4-oxo-3-quinolinecarboxylic acid N-oxide
CAS:1798008-43-1
Gatifloxacin N-Oxide
GTF56

1-Cyclopropyl-6-fluoro-1,4-dihydro-8-methoxy-7-[(4aS,7aS)-octahydro-1-methyl-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-3-quinolinecarboxylic acid
CAS:721970-37-2 & 1179992-99-4
Moxifloxacin EP Impurity F (Base) Moxifloxacin US
MXF06B

1-Cyclopropyl-6-fluoro-1,4-dihydro-8-methoxy-7-[(4aS,7aS)-octahydro-1-methyl-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-3-quinolinecarboxylic acid hydrochloride
CAS:1350716-67-4
Moxifloxacin EP Impurity F (HCl) Moxifloxacin USP
MXF06H

1-Cyclopropyl-6-fluoro-1,4-dihydro-8-methoxy-7-[(4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-3-quinolinecarboxylic acid methyl ester
CAS:721970-35-0
Moxifloxacin EP Impurity H Moxifloxacin Methyl Es
MXF08B

1-Cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid
CAS:137118-01-5
Gemifloxacin Despyrrolidinyl Impurity
GFX50

1-Cyclopropyl-6-fluoro-4-oxo-7-(4-formyl-piperazin-1-yl)-1,4-dihydro quinoline-3-carboxylic acid
CAS:93594-39-9
Ciprofloxacin N-Formyl Impurity
CPF31

1-Cyclopropyl-6-fluoro-4-oxo-7-(4-N-nitroso-piperazin-1-yl)-1,4-dihydro quinoline-3-carboxylic acid
CAS:864443-44-7
Ciprofloxacin N-Nitroso Impurity
CPF48

1-CYCLOPROPYL-6-FLUORO-4-OXO-7-(PIPERAZIN-1-YL)-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:85721-33-1
Ciprofloxacin (Base)
CPF00B

1-CYCLOPROPYL-6-FLUORO-4-OXO-7-(PIPERAZIN-1-YL)-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID HCL
CAS:86393-32-0
Enrofloxacin EP Impurity B Ciprofloxacin HCl
ERF02H

1-Cyclopropyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid hydrochloride monohydrate
CAS:86393-32-0
Ciprofloxacin (HCl.H2O) Ciprofloxacin Hydrochorid
CPF00H

1-Cyclopropyl-6-fluoro-7-(piperazin-1-yl) quinolin-4(1H)-one
CAS:105394-83-0
Ciprofloxacin EP Impurity E Descarboxy Ciprofloxa
CPF05B

1-CYCLOPROPYL-6-FLUORO-8-HYDROXY-7-(3-METHYLPIPERAZIN-1-YL)-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:616205-76-6
Gatifloxacin USP RC A Gatifloxacin O-Desmethyl Im
GTF21

1-Cyclopropyl-6-fluoro-8-hydroxy-7-[(4aS,7aS)-octahydro-6H-pyrrolo [3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
CAS:721970-36-1
Moxifloxacin EP Impurity E (Base) Moxifloxacin US
MXF05B

1-Cyclopropyl-6-fluoro-8-hydroxy-7-[(4aS,7aS)-octahydro-6H-pyrrolo [3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid HBr
CAS:1292904-74-5
Moxifloxacin EP Impurity E (HBr) Moxifloxacin HBr
MXF05H

1-Cyclopropyl-6-fluoro-8-hydroxy-7-[(4aS,7aS)-octahydro-6H-pyrrolo [3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid HCl
CAS:2252446-71-0
Moxifloxacin EP Impurity E (HCl) Moxifloxacin HCl
MXF05X

1-CYCLOPROPYL-6-FLUORO-8-METHOXY-4-OXO-7-(PIPERAZIN-1-YL)-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:112811-57-1
Gatifloxacin USP RC D Gatifloxacin 3-Desmethyl Im
GTF24

1-CYCLOPROPYL-6-FLUORO-8-METHOXY-7-(2-METHYLPIPERAZIN-1-YL)-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:1029364-65-5
Gatifloxacin USP RC E (Acid) Gatifloxacin USP Imp
GTF25A

1-Cyclopropyl-6-fluoro-8-methoxy-7-(2-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid HCl
CAS:1219097-41-2
Gatifloxacin USP RC E (HCl) Gatifloxacin USP Impu
GTF25H

1-Cyclopropyl-6-fluoro-8-methoxy-7-(2-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid sodium salt
Gatifloxacin USP RC E (Sodium Salt) Gatifloxacin
GTF25N

1-CYCLOPROPYL-6-FLUORO-8-METHOXY-7-[(4AR,7AR)-OCTAHYDRO-6H-PYRROLO[3,4-B]PYRIDIN-6-YL]-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID HYDROCHLORIDE
CAS:268545-13-7
Moxifloxacin EP Impurity G (Base) Moxifloxacin USP
MXF07B

1-CYCLOPROPYL-6-FLUORO-8-METHOXY-7-[(4AR,7AR)-OCTAHYDRO-6H-PYRROLO[3,4-B]PYRIDIN-6-YL]-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID HYDROCHLORIDE
CAS:1394029-14-1 1346603-25-5
Moxifloxacin EP Impurity G (HCl) Moxifloxacin USP
MXF07H

1-Cyclopropyl-6-fluoro-8-methoxy-7-[(4aR,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
CAS:855661-71-1
Moxifloxacin (4aR,7aS)-Isomer (Base)
MXF50B

1-Cyclopropyl-6-fluoro-8-methoxy-7-[(4aR,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid hydrochloride
Moxifloxacin (4aR,7aS)-Isomer HCl
MXF50H

1-Cyclopropyl-6-fluoro-8-methoxy-7-[(4aS,7aR)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
CAS:855661-74-4
Moxifloxacin (4aS,7aR)-Isomer (Base)
MXF51B

1-Cyclopropyl-6-fluoro-8-methoxy-7-[(4aS,7aR)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid hydrochloride
Moxifloxacin (4aS,7aR)-Isomer HCl
MXF51H

1-Cyclopropyl-6-fluoro-8-methoxy-7-[(4aS,7aS)-N-nitroso-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
Moxifloxacin N-Nitroso Impurity N-Nitroso Moxiflo
MXF48B

1-Cyclopropyl-6-fluoro-8-methoxy-7-[(4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline
CAS:1322062-57-6
Moxifloxacin Decarboxy Analog (Base) Decarboxy Mo
MXF31B

1-Cyclopropyl-6-fluoro-8-methoxy-7-[(4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline hydrochloride
Moxifloxacin Decarboxy Analog (HCl) Decarboxy Mox
MXF31H

1-Cyclopropyl-6-fluoro-8-methoxy-7-[(4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
CAS:151096-09-2
Moxifloxacin (Base) (4aS,7aS)-Moxifloxacin
MXF00B

1-Cyclopropyl-6-fluoro-8-methoxy-7-[(4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid hydrochloride
CAS:186826-86-8
Moxifloxacin (HCl) (4aS,7aS)-Moxifloxacin HCl
MXF00H

1-Cyclopropyl-6-fluoro-8-methoxy-7-[(4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid hydrochloride monohydrate
CAS:192927-63-2
Moxifloxacin (HCl Monohydrate) (4aS,7aS)-Moxiflox
MXF00X

1-CYCLOPROPYL-6-HYDROXY-4-OXO-7-(PIPERAZIN-1-YL)-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:226903-07-7
Ciprofloxacin EP Impurity F (Base) Ciprofloxacin
CPF06B

1-Cyclopropyl-6-hydroxy-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid hydrochloride
Ciprofloxacin EP Impurity F (HCl) Ciprofloxacin 6
CPF06H

1-Cyclopropyl-6-methoxy-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid
Ciprofloxacin 6-Methoxy Analog
CPF36

1-Cyclopropyl-7-((3S,5R)-3,5-dimethylpiperazin-1-yl)-6,8-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
CAS:126457-99-6
Sparfloxacin RC 4 Orbifloxacin EP Impurity C 5-D
SFX64

1-Cyclopropyl-7-(3,5-dimethylpiperazin-1-yl)-6,8-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
CAS:103460-90-8
Sparfloxacin RC 3
SFX63

1-Cyclopropyl-7-(4-ethyl-1-piperazinyl)-6-fluoro-1,4-dihydro-4-oxo -3-quinolinecarboxylic acid
CAS:93106-60-6
Enrofloxacin
ERF00

1-Cyclopropyl-7-(4-ethylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
CAS:138892-82-7
Enrofloxacin EP Impurity C Desfluoro Enrofloxacin
ERF03

1-Cyclopropyl-7-(4-ethylpiperazin-1-yl)-6-fluoroquinolin-4(1H)-one
CAS:131775-99-0
Enrofloxacin EP Impurity F Decarboxy Enrofloxacin
ERF06

1-CYCLOPROPYL-7-[(3R,5S)-3,5-DIMETHYLPIPERAZIN-1-YL]-5,6,8-TRIFLUORO-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:113617-63-3
Orbifloxacin
OBX00

1-Cyclopropyl-7-[(3R,5S)-3,5-dimethylpiperazin-1-yl]-5,6,8-trifluoroquinolin-4(1H)-one
CAS:166323-26-8
Orbifloxacin EP Impurity G Descarboxyl Orbifloxac
OBX07

1-Cyclopropyl-7-[(3R,5S)-3,5-dimethylpiperazin-1-yl]-6,8-difluoro-5-hydroxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
CAS:126458-22-8
Orbifloxacin EP Impurity D Orbifloxacin 5-Hydroxy
OBX04

1-Cyclopropyl-7-[(3R,5S)3,5-dimethylpiperazin-1-yl]-6,8-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
CAS:126457-99-6
Orbifloxacin EP Impurity C 5-Desfluoro Orbifloxac
OBX03

1-Cyclopropyl-8-ethoxy-6-fluoro-7-[(4aS,7aS)-octahydro-6H-pyrrolo [3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
CAS:1029364-75-7
Moxifloxacin EP Impurity C (Base) Moxifloxacin US
MXF03B

1-Cyclopropyl-8-ethoxy-6-fluoro-7-[(4aS,7aS)-octahydro-6H-pyrrolo [3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid HCl
Moxifloxacin EP Impurity C (HCl) Moxifloxacin USP
MXF03H

1-Cyclopropyl-8-fluoro-6-methoxy-7-[(4aS,7aS)-octahydro-6H-pyrrolo [3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
CAS:1029364-77-9
Moxifloxacin EP Impurity D (Base) Moxifloxacin US
MXF04B

1-Cyclopropyl-8-fluoro-6-methoxy-7-[(4aS,7aS)-octahydro-6H-pyrrolo [3,4-b]pyridin-6-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid hydrochloride
Moxifloxacin EP Impurity D (HCl) Moxifloxacin USP
MXF04H

1-CYCLOPROPYL-8-METHYL-7-(5-METHYL-6-(METHYLAMINO)PYRIDIN-3-YL)-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:245765-41-7
Ozenoxacin
OZX00

1-D-RIBOFURANOSYL-3-GUANYLUREA
CAS:178671-77-7 (alpha) 2508-80-7 (beta)
Azacitidine Guanylurea alpha/beta-Mixture
AZC33

1-Deoxy-1-(3,4-dihydro-7,8-dimethyl-2,4-dioxopyrimido[4,5-b]quinolin-10(2H)-yl)-D-ribitol 2,3,4,5-tetraacetate
CAS:59389-72-9
Riboflavin RC 15
RBF75

1-DEOXY-1-[(3,4-DIMETHYLPHENYL)(1,2,3,6-TETRAHYDRO-2,6-DIOXO-4-PYRIMIDINYL)AMINO]-D-RIBITOL 2,3,4,5-TETRAACETATE
CAS:59389-71-8
Riboflavin RC 7
RBF67

1-Deoxy-1-[[2-[(ethoxycarbonyl)amino]-5-[[(4-fluorophenyl)Methyl]amino]phenyl]amino] ß-D-Glucopyranuronic Acid
CAS:191873-41-3
Retigabine N-ß-D-Glucuronide (Acid)
RGB53A

1-Deoxy-1-[[2-[(ethoxycarbonyl)amino]-5-[[(4-fluorophenyl)methyl]amino]phenyl]amino] ß-D-glucopyranuronic acid sodium salt
Retigabine N-ß-D-Glucuronide Sodium Salt
RGB53N

1-Deoxy-1-[[4-[[[(2R,3S)-3-[[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl]oxy]carbonyl]amino]-2-hydroxy-4-phenylbutyl](2-methylpropyl)amino]sulfonyl]phenyl]amino]-ß-D-glucopyranuronic acid
CAS:1159613-25-8
Darunavir N-ß-D-Glucuronide (Acid)
DRV50A

1-Deoxy-1-[[4-[[[(2R,3S)-3-[[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl]oxy]carbonyl]amino]-2-hydroxy-4-phenylbutyl](2-methylpropyl)amino]sulfonyl]phenyl]amino]-ß-D-glucopyranuronic acid sodium
Darunavir N-ß-D-Glucuronide (Sodium Salt)
DRV50N

1-Deoxy-1-[[4-[2-[[4-[2-[[(2R)-2-hydroxy-2-phenylethyl]amino]ethyl]phenyl]amino]-2-oxoethyl]-2-thiazolyl]amino]-ß-D-glucopyranuronic acid
CAS:1365244-68-3
Mirabegron N-glucuronide
MRB60B

1-Deoxy-1-[4,5-dimethyl-2-(phenylazo)phenylamino]-D-ribitol
CAS:21037-26-3
Riboflavin RC 16
RBF76

1-Deoxy-1-[4-[2-hydroxy-3-[[2-(2-methoxyphenoxy)ethyl]amino]propoxy]-9H-carbazol-9-yl]-ß-D-glucopyranuronic Acid
CAS:216973-69-2
Carvedilol N-beta-D-Glucuronide
CVD54

1-DODECYLIMIDAZOLIDINE-2,4-DIONE
CAS:85391-28-2
Hydantoin 1-Dodecyl
HDT57

1-Ethenyl-2-(4-methylhexahydro-1H-1,4-diazepin-1-yl)-1H-benzimidazole
Emedastine EP Impurity D
EDS04

1-ETHYL-1H-IMIDAZOLE
CAS:7/9/7098
Clotrimazole RC 1
CLT61

1-ETHYL-3-BROMOADAMANTANE
CAS:878-61-5
Amantadine Impurity 2
AMN52

1-ETHYL-4-ISOBUTYLBENZENE
CAS:100319-40-2
Ibuprofen Impurity 5
IBP65

1-Ethyl-4-oxo-6,7-bis(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid
CAS:177554-64-2
Norfloxacin EP Impurity C Norfloxacin Dipiperazin
NFX03

1-ETHYL-6,7,8-TRIFLUORO-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:75338-42-0
Lomefloxacin 7-Fluoro Impurity
LMX57

1-ETHYL-6,8-DIFLUORO-4-OXO-7-(PIPERAZIN-1-YL)-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:99726-76-8
Lomefloxacin 3-Desmethyl Impurity 8-Fluoro Norflo
LMX53

1-ETHYL-6,8-DIFLUORO-7-(3-METHYLPIPERAZIN-1-YL)-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID
CAS:98079-51-7
Lomefloxacin (Base)
LMX00B

1-ETHYL-6,8-DIFLUORO-7-(3-METHYLPIPERAZIN-1-YL)-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID HYDROCHLORIDE
CAS:98079-52-8
Lomefloxacin HCl
LMX00H

1-Ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(3-oxo-1-piperazinyl)-3-quinolinecarboxylic acid
CAS:74011-42-0
Norfloxacin 3-Oxo Impurity
NFX53

1-Ethyl-6-fluoro-1,4-dihydro-7-(4-hydroxy-1-piperazinyl)-4-oxo-3-quinolinecarboxylic acid
CAS:109142-49-6
Norfloxacin N-Hydroxy Impurity
NFX50