| | 3,3'-BIPYRIDINE,4,4'-BIS(DIPHENYLPHOSPHINO)-2,2',6,6'-TETRAMETHOXY-,(3S)- CAS:362524-23-0 Formula: C38H34N2O4P2 ACM362524230 (R)-P-Phos, (S)-P-Phos, 221012-82-4, 675792_ALDRIC 644.64 3,3'-BIPYRIDINE,4,4'-BIS[BIS(3,5-DIMETHYLPHENYL)PHOSPHINO]-2,2',6,6'-TETRAMETHOXY-,(3R)- CAS:442905-33-1 Formula: C46H50N2O4P2 ACM442905331 (R)-(+)-2,2 inverted exclamation marka,6,6 inverte 756.85 3,3'-BIPYRIDINE,4,4'-BIS[BIS(3,5-DIMETHYLPHENYL)PHOSPHINO]-2,2',6,6'-TETRAMETHOXY-,(3S)- CAS:443347-10-2 Formula: C46H50N2O4P2 ACM443347102 (R)-(+)-2,2 inverted exclamation marka,6,6 inverte 756.85 3,3'-BIS(DIPHENYLPHOSPHINO)-5,5',6,6',7,7',8,8'-OCTAHYDRO[2,2']BINAPHTHALENE CHLOROFORM ADDUCT,99% CAS:1067889-87-5 Formula: C44H40P2∙0.5CHCl3 ACM1067889875 3,3-bis(diphenylphosphanyl)-5,6,7,8,5,6,7,8-octahy 630.74 (690.43) 3,3'-Bis[3,5-bis(trifluoromethyl)phenyl]-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthyl-2,2'-diyl Hydrogen Phosphate CAS:1836233-62-5 Formula: C36H25F12O4P ACM1836233625 10,16-Bis[3,5-bis(trifluoromethyl)phenyl]-13-hydro 780.54 3,3'-Dibromo-5,5',6,6',7,7',8,8'-octahydro-[1,1'-binaphthalene]-2,2'-diamine Formula: C20H22Br2N2 ACMA00040811 450.21 3,3,3',3'-TETRAMETHYL-1,1'-SPIROBIINDAN-5,5',6,6',7,7'-HEXOL CAS:32737-33-0 Formula: C21H24O6 ACM32737330 NSC512921, CID101409, ZINC05543367, 32737-33-0, 1, 372.411660 [g/mol] 3,3,3',3'-TETRAMETHYL-2,2',3,3'-TETRAHYDRO-1,1'-SPIROBI[INDENE]-6,6'-DIOL CAS:1568-80-5 Formula: C21H24O2 ACM1568805 3,3,3',3'-Tetramethyl-2,2',3,3'-tetrahydro[1,1'-sp 308.41 3,3,3',3'-TETRAMETHYL-5,5',6,6'-TETRAPROPOXY-1,1'-SPIROBIINDANE CAS:89929-65-7 Formula: C33H48O4 ACM89929657 89929-65-7, 3,3,3,3-Tetramethyl-5,5,6,6-tetrapropo 508.73 3,3,4,4,4-PENTAFLUOROBUTYL METHACRYLATE CAS:52519-51-4 Formula: C8H9F5O2 ACM52519514 EINECS 257-990-4, CID104225, 3,3,4,4,4-Pentafluoro 232.147876 [g/mol] 3,3,4,4,5,5,5-HEPTAFLUORO-1-IODO-1-PENTENE CAS:376-97-6 Formula: C5H2F7I ACM376976 3,3,4,4,5,5,5-HEPTAFLUORO-1-IODO-1-PENTENE;3,3,4,4 321.96 3,3,4,4,5,5,5-HEPTAFLUORO-2-METHYLPENTAN-2-OL CAS:355-22-6 Formula: C6H7F7O ACM355226 3,3,4,4,5,5,5-Heptafluoro-2-methylpentan-2-ol;3,3, 3,3,4,4,5,5,5-HEPTAFLUOROPENTAN-1-OL CAS:755-40-8 Formula: C5H5F7O ACM755408 3,3,4,4,5,5,5-HEPTAFLUOROPENTAN-1-OL 214.08 3,3,4,4,5,5,5-HEPTAFLUOROPENTANAL CAS:126015-32-5 Formula: C5H3F7O ACM126015325 3,3,4,4,5,5,5-Heptafluoropentanal 212.07 3,3,4,4,5,5,5-HEPTAFLUOROPENTANOIC ACID CAS:679-46-9 Formula: C5H3F7O2 ACM679469 RARECHEM AL BE 0962;3,3,4,4,5,5,5-HEPTAFLUOROPENTA 228.06 3,3,4,4,5,5,5-HEPTAFLUOROPENTYNE CAS:80337-25-3 Formula: C5HF7 ACM80337253 3,3,4,4,5,5,5-HEPTAFLUORO-1-PENTYNE;3,3,4,4,5,5,5- 194.05 3,3,4,4,5,5,6,6,6-NONAFLUORO-1-NITRO-1-HEXENE CAS:306935-66-0 Formula: C6H2F9NO2 ACM306935660 3,3,4,4,5,5,6,6,6-nonafluoro-1-nitro-1-hexene;tran 291.07 3,3,4,4,5,5,6,6,6-NONAFLUORO-1-NITROHEXAN-2-OL CAS:240408-94-0 Formula: C6H4F9NO3 ACM240408940 3,3,4,4,5,5,6,6,6-Nonafluoro-1-nitrohexan-2-ol 309.09 3,3,4,4,5,5,6,6,6-NONAFLUOROHEXAN-1-OL CAS:2043-47-2 Formula: C6H5F9O OFC2043472 2-Nonafluorobutyl)ethanol; 1H,1H,2H,2H-Perfluorohe 264.09 3,3,4,4,5,5,6,6,6-NONAFLUOROHEXANE-1-SULFONYL CHLORIDE CAS:27619-88-1 Formula: C6H4ClF9O2S ACM27619881 EINECS 248-575-9, CID119684, 3,3,4,4,5,5,6,6,6-Non 346.598389 [g/mol] 3,3,4,4,5,5,6,6,6-NONAFLUOROHEXYL NITRATE CAS:34839-44-6 Formula: C6H4F9NO3 ACM34839446 EINECS 252-239-7, 3,3,4,4,5,5,6,6,6-Nonafluorohexy 309.086489 [g/mol] 3,3,4,4,5,5,6,6,7,7,7-UNDECAFLUOROHEPT-1-ENE CAS:84100-13-0 Formula: C7H3F11 ACM84100130 EINECS 282-095-0, CID3019664, 3,3,4,4,5,5,6,6,7,7, 296.081155 [g/mol] 3,3,4,4,5,5,6,6,7,7,7-UNDECAFLUOROHEPTAN-2-OL CAS:914637-05-1 Formula: C7H5F11O ACM914637051 3,3,4,4,5,5,6,6,7,7,7-Undecafluoroheptan-2-ol, 914 314.0964 3,3,4,4,5,5,6,6,7,7,7-UNDECAFLUOROHEPTANE-1-SULFONYL CHLORIDE CAS:65702-23-0 Formula: C7H4ClF11O2S ACM65702230 EINECS 265-884-4, CID103439, 3,3,4,4,5,5,6,6,7,7,7 396.605895 [g/mol] 3,3,4,4,5,5,6,6,7,7,8,8,8-TRIDECAFLUORO-1-OCTANOL CAS:647-42-7 Formula: C8H5F13O ACM647427 1,1,2,2-Tetrahydroperfluoro-1-octanol;3,3,4,4,5,5, 364.1 3,3,4,4,5,5,6,6,7,7,8,8,8-TRIDECAFLUOROOCTANESULFONYL CHLORIDE CAS:27619-89-2 Formula: C8H4ClF13O2S ACM27619892 EINECS 248-576-4, CID119685, 3,3,4,4,5,5,6,6,7,7,8 446.613402 [g/mol] 3,3,4,4,5,5,6,6,7,7,8,8,8-TRIDECAFLUOROOCTYL ACRYLATE CAS:17527-29-6 Formula: H2C=CHCO2CH2CH2(CF2)5CF3 ACM17527296-5 1H,1H,2H,2H-perfluorooctyl acrylate, TFOA 418.15 3,3,4,4,5,5,6,6,7,7,8,8,8-TRIDECAFLUOROOCTYL ACRYLATE, 97%, CONTAINS 100 PPM TBC AS STABILIZER CAS:17527-29-6 Formula: C11H7F13O2 ACM17527296-2 418.15g/mol 3,3,4,4,5,5,6,6,7,7,8,8,8-TRIDECAFLUOROOCTYL METHACRYLATE CAS:2144-53-8 Formula: H2C=C(CH3)CO2CH2CH2(CF2)5CF3 ACM2144538-6 1H,1H,2H,2H-perfluorooctyl methacrylate 432.18 3,3,4,4,5,5,6,6,7,7,8,8,8-TRIDECAFLUOROOCTYL METHACRYLATE, 98% CAS:2144-53-8 Formula: C12H9F13O2 ACM2144538-1 432.18g/mol 3,3,4,4,5,5,6,6,7,7,8,8,8-TRIDECAFLUOROOCTYLPHOSPHONIC ACID CAS:252237-40-4 Formula: C8H6F13O3P ACM252237404-1 428.08g/mol 3,3,4,4,5,5,6,6,7,7,8,8,9,10,10,10-HEXADECAFLUORO-9-(TRIFLUOROMETHYL)DECYL DIHYDROGEN PHOSPHATE CAS:78974-42-2 Formula: C11H6F19O4P ACM78974422 EINECS 279-027-7, 3,3,4,4,5,5,6,6,7,7,8,8,9,10,10, 594.106362 [g/mol] 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-HEPTADECAFLUORODECANOYL CHLORIDE CAS:64018-23-1 ACM64018231 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-HEPTADECAFLUORODECYL METHACRYLATE CAS:1996-88-9 Formula: H2C=C(CH3)CO2CH2CH2(CF2)7CF3 ACM1996889-6 HDFDMA 532.19 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-HEPTADECAFLUORODECYL-TRI-ISOPROPOXYSILANE CAS:246234-80-0 Formula: C19H25F17O3Si ACM246234800 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-Heptadecafluo 652.46 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-HEPTADECAFLUORODECYL-TRI-METHOXYSILANE CAS:83048-65-1 Formula: C13H13F17O3Si ACM83048651-6 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-HEPTADECAFLUORODECYL-TRI-PROPOXYSILANE CAS:521084-64-0 Formula: C19H25F17O3Si ACM521084640 652.46 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-HEPTADECAFLUORODECYLPHOSPHONIC ACID CAS:80220-63-9 Formula: C10H6F17O3P ACM80220639 528.1g/mol 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-NONADECAFLUOROUNDECANE-1-SULFONYL CHLORIDE CAS:65702-24-1 Formula: C11H4ClF19O2S ACM65702241 EINECS 265-886-5, CID103440, 3,3,4,4,5,5,6,6,7,7,8 596.635921 [g/mol] 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,12-HENEICOSAFLUORODODECYL ACRYLATE CAS:17741-60-5 AP17741605 618.18 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,12-HENICOSAFLUORODODECANOYL CHLORIDE CAS:64018-26-4 Formula: C12H2ClF21O ACM64018264 EINECS 264-607-4, CID3017478, 3,3,4,4,5,5,6,6,7,7, 596.563147 [g/mol] 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,14-PENTACOSAFLUOROTETRADECANE-1-SULFONYL CHLORIDE CAS:68758-57-6 Formula: C14H4ClF25O2S ACM68758576 EINECS 272-148-6, CID111556, 1-Tetradecanesulfonyl 746.658440 [g/mol] 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,14-PENTACOSAFLUOROTETRADECYL DIHYDROGEN PHOSPHATE CAS:57678-07-6 Formula: C14H6F25O4P ACM57678076 EINECS 260-901-1, CID93768, 3,3,4,4,5,5,6,6,7,7,8, 744.129 g/mol 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,19,19,20,20,20-HEPTATRIACONTAFLUOROICOSYL METHACRYLATE CAS:65104-66-7 ACM65104667 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,14,14,14-TETRACOSAFLUORO-13-(TRIFLUOROMETHYL)TETRADECYL ACRYLATE CAS:52956-82-8 Formula: C18H7F27O2 ACM52956828 (+)-3-(Trifluoroacetyl)camphor, 3-(Trifluoroacetyl 248.241510 [g/mol] 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,12,12,12-ICOSAFLUORO-11-(TRIFLUOROMETHYL)DODECYL DIHYDROGEN PHOSPHATE CAS:94200-56-3 Formula: C13H6F23O4P ACM94200563 EINECS 303-535-0, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,1 694.121375 [g/mol] 3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-PENTADECAFLUORONONANESULFONYL CHLORIDE CAS:27607-61-0 Formula: C9H4ClF15O2S ACM27607610 EINECS 248-564-9, CID119677, 3,3,4,4,5,5,6,6,7,7,8 496.620908 [g/mol] 3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-PENTADECAFLUORONONANOIC ACID CAS:45291-33-6 Formula: C9H3F15O2 ACM45291336 3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-pentadecafluorononan 428.09 3,3,4,4,5,5,6,6,7,7,8,8-DODECAFLUORO-2-OCTANOL CAS:156122-84-8 Formula: C8H6F12O ACM156122848 3,3,4,4,5,5,6,6,7,7,8,8-Dodecafluoro-2-Octanol 346.11 3,3,4,4,5,5,6,6,7,7,8,8-DODECAFLUORODECA-1,9-DIENE CAS:1800-91-5 Formula: C10H6F12 ACM-MO-1800915 3,3,4,4,5,5,6,6,7,7,8,8-Dodecafluoro-1,9-Decadiene 354.14 g/mol 3,3,4,4,5,5,6,6-OCTAFLUOROOCTA-1,7-DIENE CAS:678-65-9 Formula: C8H6F8 ACM-MO-678659 3,3,4,4,5,5,6,6-Octafluoro-1,7-octadiene; 1,4- 254.12 g/mol 3,3,4,4,5,6,6,6-OCTAFLUORO-5-(TRIFLUOROMETHYL)HEX-1-YL 2-METHYLPROP-2-ENOATE CAS:65195-44-0 Formula: C11H9F11O2 ACM65195440 3,3,4,4,5,6,6,6-Octafluoro-5-(trifluoromethyl)hex- 382.17 3,3,4,4-TETRAFLUORO-1,2-DIMETHOXYCYCLOBUTENE CAS:361-82-0 Formula: C6H6F4O2 ACM361820 3,3,4,4-TETRAFLUORO-1,2-DIMETHOXYCYCLOBUTENE;3,3,4 186.1 3,3,4,5,5,5-HEXAFLUORO-2-METHYLPENTAN-2-OL CAS:58380-92-0 Formula: C6H8F6O OFC58380920 1,1-Dimethyl-2,2,3,4,4,4-hexafluorobutanol 210.13 3,3,4,5,5,8-HEXAMETHYL-1,2,6,7-TETRAHYDRO-S-INDACENE CAS:17465-58-6 Formula: C18H26 ACM17465586 17465-58-6, AC1L1FL1, 1,1,4,7,7,8-HEXAMETHYL-S-HYD 242.399 g/mol 3,3,4,7,7,8-HEXAMETHYL-1,2,5,6-TETRAHYDRO-S-INDACENE CAS:17465-59-7 Formula: C18H26 ACM17465597 17465-59-7, AC1L1FL4, 1,1,4,5,5,8-HEXAMETHYL-S-HYD 242.399 g/mol 3,3,4-PIPERIDINETRIOL,5-METHYL-,(4R,5R)-(9CI) CAS:355117-76-9 Formula: C6H13NO3 ACM355117769 3,3,4-Piperidinetriol,5-methyl-,(4R,5R)-(9CI) 3,3,5,5-TETRAMEHTYL[1,1'-BIPHENYL]4,4'-DIOL CAS:188923 Formula: C16H18O2 ACM188923 3,3,5,5-Tetramehtyl [1,1'-biphenyl] 4,4'-diol;2,2' 3,3,6,6-TETRAMETHYL-1,2,4,5-TETRATHIANE CAS:4475-72-3 Formula: C6H12S4 ACM4475723 NSC9076, AIDS030026, AIDS-030026, CID73014, NSC 90 212.419480 [g/mol] 3,3-BIS(TRIFLUOROMETHYL)-1-BROMO-4,4,5,5,6,6,6-HEPTAFLUOROHEX-1-ENE CAS:128454-94-4 Formula: C8H2BrF13 OFC128454944 1-Bromo-4,4,5,5,6,6,6-heptafluoro-3,3-bis(trifluor 424.99 3,3-BIS(TRIFLUOROMETHYL)-1-BROMO-4,4,5,5,6,6,6-HEPTAFLUOROHEXANE CAS:128454-91-1 Formula: C8H4BrF13 OFC128454911 1-Bromo-4,4,5,5,6,6,6-heptafluoro-3,3-bis(trifluor 427 3,3-BIS(TRIFLUOROMETHYL)-4,4,5,5,6,6,6-HEPTAFLUORO-1-IODOHEXANE CAS:115347-68-7 Formula: C8H4F13I OFC115347687 1H,1H,2H,2H-HEPTAFLUORO-3,3-BIS(TRIFLUOROMETHYL)-1 474 3,3-BIS(TRIFLUOROMETHYL)-4,4,5,5,6,6,6-HEPTAFLUOROHEX-1-ENE CAS:79272-26-7 Formula: C8H3F13 OFC79272267 5,5,6,6,7,7,7-Heptafluoro-3,3-bis(trifluoromethyl) 346.09 3,3-DICHLORO-1,1,1,5,5,5-HEXAMETHYLTRISILOXANE CAS:2750-44-9 ACM2750449-1 3,3-Dichloro-1,1,1,5,5,5-Hexamethyl-Trisiloxane, 3,3-DIMETHYL-1,2,3,4,5A,6,7,8,9,9A-DECAHYDRODIBENZO[B,D]FURAN-1-ONE CAS:92517-43-6 Formula: C14H20O2 ACM92517436 3,3-Dimethyl-1,2,3,4,5a,6,7,8,9,9a-decahydrodibenz 220.31 3,3-DIMETHYL-13-(4-NITROPHENYL)-2,3,4,13-TETRAHYDROINDAZOLO[1,2-B]PHTHALAZINE-1,6,11-TRIO CAS:1017238-97-9 Formula: C23H19N3O5 ACM1017238979 1017238-97-9, 3,3-Dimethyl-13-(4-nitro-phenyl)-2,3 417.414060 [g/mol] 3,3-DIMETHYL-13-P-TOLYL-2,3,4,13-TETRAHYDROINDAZOLO[1,2-B]PHTHALAZINE-1,6,11-TRIONE CAS:1017239-00-7 Formula: C24H22N2O3 ACM1017239007 3,3-Dimethyl-13-p-tolyl-2,3,4,13-tetrahydroindazol 386.451 3,3A,4,4A,7A,8,9,9A-OCTAHYDRO-3-HYDROXY-3-HYDROXYMETHYL-4A,8-DIMETHYLAZULENO[6,5-B]FURAN-2,5-DIONE CAS:51292-63-8 ACM51292638 3,3A,4,5,6,7-HEXAHYDRO-3-HYDROXY-2-THIOCARBAMOYL-3-TRIFLUOROMETHYL-2H-INDAZOLE CAS:35179-58-9 Formula: C9H12F3N3OS ACM35179589 3,3a,4,5,6,7-Hexahydro-3-hydroxy-2-thiocarbamoyl-3 267.27 3,4,2',3',4'-PENTA-O-ACETYLSUCROSE CAS:34382-02-2 Formula: C22H32O16 ACM34382022 2,3,3,4,4-Penta-O-acetyl-saccharose; 2,3,3,4,4-Pen 552.48 3,4,4,5,5,5-HEXAFLUORO-3-(TRIFLUOROMETHYL)PENT-1-YNE CAS:261503-79-1 Formula: C6HF9 OFC261503791 3,4,4,5,5,5-Hexafluoro-3-trifluoromethyl-1-pentyne 244.06 3,4,4A,10B-TETRAHYDRO-2,2-DIMETHYL-2H-NAPHTHO[1,2-B]PYRAN-5,6-DIONE CAS:132820-30-5 Formula: C15H16O3 ACM132820305 3,4,4a,10b-tetrahydro-2,2-dimethyl-2H-Naphtho[1,2- 244.29 3,4,4A,5,6,10B-HEXAHYDRO-2,4-DIPHENYL-2H-NAPHTHO(1,2-B)THIOPYRAN CAS:65193-64-8 Formula: C25H24S ACM65193648 BRN 1395009, CID3049736, 7,8-Benzo-2,4-diphenylhex 356.523060 [g/mol] 3,4,4A,5,6,7,8,8A-OCTAHYDRO-2,5,5,8A-TETRAMETHYLNAPHTHALENE-1-ACETALDEHYDE CAS:97806-23-0 Formula: C16H26O ACM97806230 EINECS 307-914-1, CID113453, 1-Naphthaleneacetalde 234.377040 [g/mol] 3,4,4aa,5,6,7,8,8a-Octahydro-3a-hydroxy-5,5,8aß-trimethyl-2-naphthalenecarbaldehyde CAS:72537-20-3 Formula: C14H22O2 BBC72537203 (3R,4aS,8aS)-3-Hydroxy-5,5,8a-trimethyl-3,4,4a,6,7 222.32 3,4,5'-TRIMETHOXY-3',4'-METHYLENEDIOXY-7,9':7',9-DIEPOXYLIGNAN CAS:873867-94-8 Formula: C22H24O7 BBC873867948 1,3-Benzodioxole, 6-[(1R,3aR,4S,6aR)-4-(3,4-dimeth 400.43 3,4,5,2,3,4-HEXAHYDROXYBENZOPHENONE CAS:52479-85-3 Formula: C13H10O7 ACM52479853 3,4,5,2,3,4-HEXAHYDROXYBENZOPHENONE;(2,3,4-trihydr 278.21 3,4,5,6,7,8,9,10,11,12,13,14-DODECAHYDRO-2H-CYCLODODECA[B]PYRAN CAS:32539-83-6 Formula: C15H26O ACM32539836 NSC242988, CID99563, EINECS 251-090-5, 2H-Cyclodod 222.36634 3,4,5,6,7,8-HEXAHYDRO-2(1H)-QUINOLINONE,97% CAS:10333-11-6 Formula: C9H13NO ACM10333116 3,4,5,6,7,8-Hexahydro-2(1H)-quinolinone, 3,4,5,6,7 151.21 3,4,5,6,7,8-HEXAHYDROAZULEN-1(2H)-ONE CAS:769-32-4 Formula: C10H14O ACM769324 EINECS 212-208-0, CID69857, 3,4,5,6,7,8-hexahydro- 150.217560 [g/mol] 3,4,5,6,7,8-HEXAHYDROBENZO-2,9-DIOXACYCLODODECIN-1,10-DIONE CAS:16709-50-5 Formula: C14H16O4 ACM16709505 EINECS 240-757-6, CID117425, Phthalic acid, cyclic 248.274440 [g/mol] 3,4,5,6-TETRACHLORO-2-PYRIDINAMINE CAS:51501-52-1 ACM51501521 2-Pyridinamine, 3,4,5,6-tetrachloro-;3,4,5,6-tetra |