| | (4S,4AS,5AS,6S,12AS)-4-(DIMETHYLAMINO)-3,6,10,12,12A-PENTAHYDROXY-1,11-DIOXO-1,4,4A,5,5A,6,11,12A-OCTAHYDROTETRACENE-2-CARBOXAMIDE CAS:987-02-0 Demeclocycline EP Impurity A Demethyltetracycline DCC01 (4S,4aS,5aS,6S,12aS)-4-(Dimethylamino)-3,6,10,12,12a-pentahydroxy-6-methyl-1,11- dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide CAS:60-54-8 Oxytetracycline EP Impurity B (Base) Tetracycline OTC02B (4S,4aS,5aS,6S,12aS)-4-(Dimethylamino)-3,6,10,12,12a-pentahydroxy-6-methyl-1,11- dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide HCl CAS:64-75-5 Oxytetracycline EP Impurity B (HCl) Tetracycline OTC02H (4S,4AS,5AS,6S,12AS)-4-(DIMETHYLAMINO)-3,6,10,12,12A-PENTAHYDROXY-6-METHYL-1,11-DIOXO-1,4,4A,5,5A,6,11,12A-OCTAHYDROTETRACENE-2-CARBOXAMIDE CAS:60-54-8 Lymecycline EP Impurity H Tetracycline Oxytetrac LMC06B (4S,4AS,5AS,6S,12AS)-4-(DIMETHYLAMINO)-3,6,10,12,12A-PENTAHYDROXY-6-METHYL-1,11-DIOXO-1,4,4A,5,5A,6,11,12A-OCTAHYDROTETRACENE-2-CARBOXAMIDE CAS:60-54-8 Tetracycline (Base) Oxytetracycline EP Impurity B TCY00B (4S,4AS,5AS,6S,12AS)-4-(DIMETHYLAMINO)-3,6,10,12,12A-PENTAHYDROXY-6-METHYL-1,11-DIOXO-1,4,4A,5,5A,6,11,12A-OCTAHYDROTETRACENE-2-CARBOXAMIDE HCL CAS:64-75-5 Lymecycline EP Impurity H (HCl) Tetracycline HCl LMC06H (4S,4AS,5AS,6S,12AS)-4-(DIMETHYLAMINO)-3,6,10,12,12A-PENTAHYDROXY-6-METHYL-1,11-DIOXO-1,4,4A,5,5A,6,11,12A-OCTAHYDROTETRACENE-2-CARBOXAMIDE HYDROCHLORIDE CAS:64-75-5 Tetracycline (HCl) Oxytetracycline EP Impurity B TCY00H (4S,4aS,5aS,6S,12aS)-7-Chloro-4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydroxy-1,11-dioxo-2-naphthacenecarboxamide CAS:127-33-3 Demeclocycline (Base) Demethyl Chlortetracycline DCC00B (4S,4aS,5aS,6S,12aS)-7-Chloro-4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydroxy-1,11-dioxo-2-naphthacenecarboxamide HCl CAS:64-73-3 Demeclocycline (HCl) Demethyl Chlortetracycline DCC00H (4S,4aS,5aS,6S,12aS)-7-Chloro-4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-2-naphthacene carboxamide CAS:57-62-5 Tetracycline Chloro (Base) Lymecycline EP Impurit TCY52B (4S,4aS,5aS,6S,12aS)-7-Chloro-4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-2-naphthacene carboxamide hydrochloride CAS:64-72-2 Tetracycline Chloro HCl Lymecycline EP Impurity G TCY52H (4S,4aS,5aS,6S,12aS)-7-Chloro-4-(dimethylamino)-3,6,10,12,12a-pentahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide CAS:127-33-3 Chlortetracycline EP Impurity B (Base) Demeclocyc CHC02B (4S,4AS,5AS,6S,12AS)-7-CHLORO-4-(DIMETHYLAMINO)-3,6,10,12,12A-PENTAHYDROXY-1,11-DIOXO-1,4,4A,5,5A,6,11,12A-OCTAHYDROTETRACENE-2-CARBOXAMIDE HYDROCHLORIDE CAS:64-73-3 Chlortetracycline EP Impurity B (HCl) Demeclocycl CHC02H (4S,4AS,5AS,6S,12AS)-7-CHLORO-4-(DIMETHYLAMINO)-3,6,10,12,12A-PENTAHYDROXY-6-METHYL-1,11-DIOXO-1,4,4A,5,5A,6,11,12A-OCTAHYDROTETRACENE-2-CARBOXAMIDE CAS:57-62-5 Chlortetracycline (Base) Lymecycline EP Impurity CHC00B (4S,4AS,5AS,6S,12AS)-7-CHLORO-4-(DIMETHYLAMINO)-3,6,10,12,12A-PENTAHYDROXY-6-METHYL-1,11-DIOXO-1,4,4A,5,5A,6,11,12A-OCTAHYDROTETRACENE-2-CARBOXAMIDE CAS:57-62-5 Lymecycline EP Impurity G Chlortetracycline LMC05B (4S,4AS,5AS,6S,12AS)-7-CHLORO-4-(DIMETHYLAMINO)-3,6,10,12,12A-PENTAHYDROXY-6-METHYL-1,11-DIOXO-1,4,4A,5,5A,6,11,12A-OCTAHYDROTETRACENE-2-CARBOXAMIDE HCL CAS:64-72-2 Lymecycline EP Impurity G (HCl) Chlortetracycline LMC05H (4S,4AS,5AS,6S,12AS)-7-CHLORO-4-(DIMETHYLAMINO)-3,6,10,12,12A-PENTAHYDROXY-6-METHYL-1,11-DIOXO-1,4,4A,5,5A,6,11,12A-OCTAHYDROTETRACENE-2-CARBOXAMIDE HYDROCHLORIDE CAS:64-72-2 Chlortetracycline (HCl) Chlortetracycline Hydroch CHC00H (4S,4aS,6S,8aS)-6-((R)-7-Chloro-4-hydroxy-1-methyl-3-oxo-1,3-dihydroisobenzofuran-1-yl)-4-(dimethylamino)-3,8a-dihydroxy-1,8-dioxo-1,4,4a,5,6,7,8,8a-octahydronaphthalene-2-carboxamide CAS:514-53-4 Chlortetracycline EP Impurity G Isochlortetracycl CHC07B (4S,5R)-2,2-Dimethyl-4-phenyl-3,5-oxazolidinedicarboxylic acid 5-[(2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-11-hydroxy-4,6-dimethoxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclo CAS:1373171-12-0 Cabazitaxel Oxazolidine Impurity CZT64 (4S,5R)-2,2-Dimethyl-4-phenyl-3,5-oxazolidinedicarboxylic acid 5-[(2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3, CAS:159262-93-8 Cabazitaxel Dectroc Oxazolidine Impurity CZT62 (4S,7R,8S,9S,13Z,16S)-4,8-DIHYDROXY-5,5,7,9,13-PENTAMETHYL-16-[(1E)-1-METHYL-2-(2-METHYL-4-THIAZOLYL)ETHENYL]OXACYCLOHEXADEC-13-ENE-2,6-DIONE CAS:189453-10-9 Epothilone D 12,13-Desoxy Epothilone B EPT04 (5,6,7,7b,8,10a-Hexahydro-1,2,3,9-tetramethoxy-8-oxobenzo[a]cyclopenta[3,4]cyclobuta[1,2-c]cyclohepten-7-yl)-, [7S-(7a,7ba,10aa)]acetamide CAS:6901-14-0 Colchicine EP Impurity G CCN07 (5aR,8aR,9R)-9-(3,4,5-Trimethoxyphenyl)-5a,6,8a,9-tetrahydrofuro[3',4'6,7]naphtho[2,3-d][1,3]dioxol-5,8-dione CAS:477-49-6 Podophyllotoxin EP Impurity C Podophyllotoxone PPT03 (5R)-7-[(1S,2S,6R,8S,8aR)-2,6-Dimethyl-8-[[(2S)-2-methylbutanoyl]oxy]-1,2,6,7,8,8a-hexahydronaphthalen-1-yl]-5-hydroxy-2-heptenoic acid sodium salt CAS:188067-71-2 Lovastatin Anhydro Acid Sodium Salt LVS39N (5R,5aR,8aR)-10-Bromo-5-(3,4,5-trimethoxyphenyl)-5,5a,8a,9-tetrahydrofuro[3',4'6,7]naphtho[2,3-d][1,3]dioxol-6(8H)-one CAS:93108-16-8 Podophyllotoxin 4-Deoxy 10-Bromo PPT57 (5R,5aR,8aR)-5,8,8a,9-Tetrahydro-5-(4-hydroxy-3,5-dimethoxyphenyl)-furo [3’,4’6,7]naphtho[2,3-d]-1,3-dioxol-6(5aH)-one CAS:3590-93-0 Podophyllotoxin p-Desmethyl 9-Desoxy Impurity PPT54 (5R,5aR,8aR)-5-(3,4,5-trimethoxyphenyl)-5,8,8a,9-tetrahydrofuro[3',4'6,7]naphtho[2,3-d][1,3]dioxol-6(5aH)-one CAS:19186-35-7 Podophyllotoxin 9-Desoxy Impurity PPT51 (5R,5aR,8aR,9R)-5,8,8a,9-Tetrahydro-9-hydroxy-5-(3,4,5-trimethoxyphenyl)furo [3’,4’6,7]naphtho[2,3-d]-1,3-dioxol-6(5aH)-one CAS:518-28-5 Podophyllotoxin Etoposide EP Impurity M PPT00 (5R,5aR,8aR,9R)-5,8,8a,9-Tetrahydro-9-hydroxy-5-(4-hydroxy-3,5-dimethoxyphenyl)-furo[3’,4’6,7]naphtho[2,3-d]-1,3-dioxol-6(5aH)-one CAS:40505-27-9 Podophyllotoxin p-Desmethyl Impurity Etoposide EP PPT56 (5R,5aR,8aR,9R)-9-(ß-D-Glucopyranosyloxy)-5,8,8a,9-tetrahydro-5-(3,4,5-trimethoxy phenyl)furo[3’,4’6,7]naphtho[2,3-d]-1,3-dioxol-6(5aH)-one CAS:16481-54-2 Podophyllotoxin 9-O-Glucoside PPT53 (5R,5aR,8aR,9R)-9-Hydroxy-5-(3,4,5-trimethoxyphenyl)-5,8,8a,9-tetrahydroisobenzofuro[5,6-f][1,3]benzodioxol-6(5aH)-one CAS:518-28-5 Etoposide EP Impurity M Podophyllotoxin ESX13 (5R,5aR,8aR,9S)-5,8,8a,9-Tetrahydro-9-hydroxy-5-(3,4,5-trimethoxyphenyl)furo [3’,4’6,7]naphtho[2,3-d]-1,3-dioxol-6(5aH)-one CAS:7/9/4375 Podophyllotoxin 9-Epimer PPT52 (5R,5aR,8aR,9S)-5,8,8a,9-Tetrahydro-9-hydroxy-5-(4-hydroxy-3,5-dimethoxyphenyl)-furo[3’,4’6,7]naphtho[2,3-d]-1,3-dioxol-6(5aH)-one CAS:6559-91-7 Podophyllotoxin EP Impurity B Podophyllotoxin p-D PPT02 (5R,5aR,8aR,9S)-5-[4-[[(Benzyloxy)carbonyl]oxy]-3,5-dimethoxyphenyl]-9-[[4,6-O-[(R)-ethylidene]-2,3-di-O-formyl-ß-D-glucopyranosyl]oxy]-5,8,8a,9-tetrahydroisobenzofuro[5,6-f][1,3]benzodioxol-6(5aH)-one Etoposide EP Impurity G 4'-Carbobenzoyloxydiformy ESX07 (5R,5aR,8aR,9S)-5-[4-[[(Benzyloxy)carbonyl]oxy]-3,5-dimethoxyphenyl]-9-[[4,6-O-[(R)-ethylidene]-ß-D-glucopyranosyl]oxy]-5,8,8a,9-tetrahydroisobenzofuro[5,6-f][1,3]benzodioxol-6(5aH)-one CAS:124151-67-3 Etoposide EP Impurity A 4'-Carbobenzoyloxyethylid ESX01 (5R,5aR,8aR,9S)-9-[[2,3-Bis-O-(Dichloroacetyl)-4,6-O-[(S)-ethylidene]-ß-L-glucopyranosyl]oxy]-5-(4-hydroxy-3,5-dimethoxyphenyl)-5,8,8a,9-tetrahydroisobenzofuro[5,6-f][1,3]benzodioxol-6(5aH)-one Etoposide EP Impurity O ESX15 (5R,5aR,8aR,9S)-9-[[4,6-O-[(R)-ethylidene]-a-D-glucopyranosyl]oxy]-5-(4-hydroxy-3,5-dimethoxyphenyl)-5,8,8a,9-tetrahydroisobenzofuro[5,6-f][1,3]benzodioxol-6(5aH)-one CAS:100007-53-2 Etoposide EP Impurity C alpha-Etoposide ESX03 (5R,5aR,8aR,9S)-9-[[4,6-O-[(R)-Ethylidene]-ß-D-glucopyranosyl]oxy]-5-(3,4,5-trimethoxyphenyl)-5,8,8a,9tetrahydroisobenzofuro[5,6-f][1,3]benzodioxol-6(5aH)-one CAS:111712-42-6 Etoposide EP Impurity I 4-O-Methylethylidene Lign ESX09 (5R,5aR,8aR,9S)-9-[[4,6-O-[(R)-Ethylidene]-ß-D-glucopyranosyl]oxy]-5-(4-hydroxy-3,5-dimethoxyphenyl)-5,8,8a,9-tetrahydroisobenzofuro[5,6-f][1,3]benzodioxol-6(5aH)-one CAS:33419-42-0 Etoposide ESX00 (5R,5aR,8aR,9S)-9-[[4,6-O-[(R)-Ethylidene]-ß-D-glucopyranosyl]oxy]-5-[4-[(phenoxyacetyl)oxy]-3,5-dimethoxyphenyl]-5,8,8a,9-tetrahydroisobenzofuro[5,6-f][1,3]benzodioxol-6(5aH)-one Etoposide EP Impurity F 4'-Phenoxyacetyletoposide ESX06 (5R,5aR,8aR,9S)-9-[[4,6-O-[(R)-Ethylidene]-ß-D-glucopyranosyl]oxy]-5-[4-[[(5R,5aR,8aR,9R)-5-(4-hydroxy-3,5-dimethoxyphenyl)-6-oxo-5,5a,6,8,8a,9-hexahydroisobenzofuro[5,6-f][1,3]benzodioxol-9-yl]oxy]-3,5-dimethoxyphenyl]-5,8,8a,9-tetrahydroisobenzofuro[5,6 Etoposide EP Impurity R ESX18 (5R,5aR,8aR,9S)-9-[[4,6-O-[(R)-Ethylidene]-ß-D-glucopyranosyl]oxy]-5-[4-[[(5R,5aR,8aR,9S)-5-(4-hydroxy-3,5-dimethoxyphenyl)-6-oxo-5,5a,6,8,8a,9-hexahydroisobenzofuro[5,6-f][1,3]benzodioxol-9-yl]oxy]3,5-dimethoxyphenyl]-5,8,8a,9-tetrahydroisobenzofuro-[5,6 Etoposide EP Impurity N ESX14 (5R,5aS,8aR,9R)-5,8,8a,9-Tetrahydro-9-hydroxy-5-(3,4,5-trimethoxyphenyl)furo [3’,4’6,7]naphtho[2,3-d]-1,3-dioxol-6(5aH)-one CAS:477-47-4 Podophyllotoxin EP Impurity A Podophyllotoxin 5a- PPT01 (5R,5aS,8aR,9R)-5,8,8a,9-Tetrahydro-9-hydroxy-5-(4-hydroxy-3,5-dimethoxyphenyl)furo[3',4'6,7]naphtho[2,3-d]-1,3-dioxol-6(5aH)-one CAS:112066-16-7 Podophyllotoxin 4’-Demethyl PPT58 (5R,5aS,8aR,9S)-9-[[4,6-O-[(R)-Ethylidene]-ß-D-glucopyranosyl]oxy]-5-(4-hydroxy-3,5-dimethoxyphenyl)-5,8,8a,9-tetrahydroisobenzofuro[5,6-f][1,3]benzodioxol-6(5aH)-one CAS:100007-56-5 Etoposide EP Impurity B Picroethylidene Lignan P ESX02 (5S,8R,9R,10S,13S,14S,17S)-17-Ethynyl-13-methyl-2,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-ol 19-nor-5a,17a-pregn-3-en-20-yn-17-ol Lynestrenol EP Impurity A Lynestrenol Delta-3 Iso LNS01 (5Z,7E,22E,24R)-24-Cyclopropyl-24-[[(5Z,7E,22E,24S)-24-cyclopropyl-1a,3ß-dihydroxy-9,10-secochola-5,7,10(19),22-tetraen-24-yl]oxy]-9,10-secochola-5,7,10(19),22-tetraene-1a,3ß-diol Calcipotriol EP Impurity H CCP08 (5Z,7E,22E,24S)-24-Cyclopropyl-1a,3ß-bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-9,10-secochola-5,7,10(19),22-tetraen-24-ol 1,3-Bis-O-(tert-butyldimethylsilyl)calcipotriene CAS:112875-61-3 Calcipotriol EP Impurity F CCP06 (6aR,7R,9aR)-11-[(3S,5R)-3,5-Dihydroxy-2-methylcyclohex-1-enyl]-7-[(1R)-5-hydroxy-1,5-dimethylhexyl]-6a-methyl-2-phenyl-5,6,6a,7,8,9,9a,11-octahydro-1H,4aH-cyclopenta[f][1,2,4]triazolo[1,2a]cinnoline-1,3(2H)-dione CAS:86307-44-0 Calcitriol EP Impurity C Pre-Calcitriol Triazolin CCT03 (6bR)-12-(1,3-Benzodioxol-5-yl)-12a-hydroxy-8-methyl-6a,6b,8,9,12,12a-hexahydropyrazino[1',2'1,2]-pyrrolo[3,4-c]quinoline-6,7,10(5H)-trione Tadalafil EP Impurity D TLF04 (6bR,10aS)-Ethyl 2-oxo-2,3,6b,7,10,10a-hexahydro-1H-pyrido[3,44,5]pyrrolo[1,2,3-de]quinoxaline-8(9H)-carboxylate CAS:313544-32-0 Lumateperone Impurity 2 LMR62 (6bR,10aS)-Ethyl 3-methyl-2-oxo-2,3,6b,7,10,10a-hexahydro-1H-pyrido[3,44,5]pyrrolo[1,2,3-de]quinoxaline-8(9H)-carboxylate CAS:313544-76-2 Lumateperone Impurity 3 LMR63 (6R)-6-((3S,5R,10S,12S,13R,14R,17R)-3,12-Dihydroxy-4,4,10,13,14-pentamethyl-7,11,15-trioxo-2,3,4,5,6,7,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-methyl-4-oxoheptanoic acid CAS:105742-76-5 Ganoderic acid C6 GDR53 (6R)-6-((5R,10S,12S,13R,14R,17R)-12-Acetoxy-4,4,10,13,14-pentamethyl-3,7,11,15-tetraoxo-2,3,4,5,6,7,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-methyl-4-oxoheptanoic acid CAS:98665-15-7 Ganoderic acid F GDR56 (6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro-2,7-dimethyl-Pyrazino[1',2'1,6]pyrido[3,4-b]indole-1,4-dione CAS:477970-21-1 Tadalafil Impurity 22 TLF82 (6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro-2-(2-hydroxypropyl)-pyrazino[1',2'1,6]pyrido[3,4-b]indole-1,4-dione CAS:1353020-85-5 Tadalafil Impurity 20 TLF80 (6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro-2-octylpyrazino[1',2'1,6]pyrido[3,4-b]indole-1,4-dione CAS:1173706-35-8 Tadalafil Impurity 23 TLF83 (6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydropyrazino [1',2'1,6]-pyrido[3,4-b]indole-1,4-dione CAS:171596-36-4 Tadalafil N-Desmethyl Impurity TLF41 (6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2-butyl-2,3,6,7,12,12a-hexahydropyrazino[1',2'1,6]pyrido[3,4-b]indole-1,4-dione CAS:171596-31-9 Tadalafil Impurity 18 TLF78 (6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2-cyclopentyl-2,3,6,7,12,12a-hexahydropyrazino[1',2'1,6]pyrido[3,4-b]indole-1,4-dione CAS:171596-32-0 Tadalafil N-Desmethyl-N-Cyclopentyl TLF55 (6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2-ethyl-2,3,6,7,12,12a-hexahydropyrazino[1',2'1,6]pyrido[3,4-b]indole-1,4-dione CAS:1609405-34-6 Tadalafil N-Ethyl TLF56 (6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino [1',2'1,6]-pyrido[3,4-b]indole-1,4-dione CAS:171596-29-5 Tadalafil TLF00 (6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydropyrazino [1',2'1,6]-pyrido[3,4-b]indole-1,4-dione CAS:385769-84-6 Tadalafil N-Desmethyl N-Amino Impurity (Base) TLF42B (6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydropyrazino [1',2'1,6]-pyrido[3,4-b]indole-1,4-dione HCl Tadalafil N-Desmethyl N-Amino Impurity (HCl) TLF42H (6R,12aR)-6-(3,4-Dihydroxyphenyl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino [1',2'1,6]-pyrido[3,4-b]indole-1,4-dione CAS:171489-03-5 Tadalafil Desmethylene Impurity TLF40 (6R,12aR)-6-(Benzo[d][1,3]dioxol-2-one-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino [1',2'1,6]-pyrido[3,4-b]indole-1,4-dione CAS:1346602-17-2 Tadalafil Dioxolone Impurity TLF50 (6R,12aR)-rel-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro-2-(2-hydroxyethyl)-pyrazino[1',2'1,6]pyrido[3,4-b]indole-1,4-dione CAS:385769-94-8 Tadalafil 2-Hydroxyethyl TLF52 (6R,12aR,12bR)-6-(1,3-Benzodioxol-5-yl)-6a-hydroxy-2-methyl-2,3,6a,7,12a,12b-hexahydropyrazino [1',2'1,5]-pyrrolo[3,4-b]quinoline-1,4,12(6H)-trione CAS:1978322-99-4 Tadalafil EP Impurity E TLF05 (6R,12aS)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro pyrazino [1',2'1,6]pyrido[3,4-b]indole-1,4-dione CAS:929100-66-3 Tadalafil EP Impurity A N-Desmethyl Impurity N-De TLF51 (6R,12aS)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino [1',2'1,6]pyrido[3,4-b]indole-1,4-dione CAS:171596-27-3 Tadalafil EP Impurity A Tadalafil USP RC A Tadal TLF01 (6R,14aR)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,14,14a-tetrahydropyrazino[1,2-d][1,4]benzodiazonine-1,4,7,13(6H,8H)-tetrone CAS:1346605-38-6 1978322-98-3 Tadalafil EP Impurity H Tadalafil Ketolactam TLF08 (6R,8S,9R,10R,13S,14S,17S)-13-Ethyl-17-ethynyl-6-hydroperoxy-17-hydroxy-10-methyl-11-methylene-1,7,8,10,11,12,13,15,16,17-decahydro-2H-cyclopenta[a]phenanthren-3(6H,9H,14H)-one Etonogestrel RC 3 ETG63 (6R,8S,9R,10S,11S,13S,14S,16R,17R)-6,9-Difluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:60895-22-9 Flumethasone Impurity 1 6ß-Fluoro Flumethasone FMP51 (6R,8S,9R,10S,11S,13S,14S,16R,17R)-9-Chloro-17-(2-chloroacetyl)-6,11-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl furan-2-carboxylate CAS:132160-74-8 Mometasone Furoate 6beta-Hydroxy Impurity MTS44 (6R,8S,9R,10S,11S,13S,14S,16R,17S)-6,9-Difluoro-11-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one Difluocortolone 6R-Fluoro Impurity DFC56 (6R,8S,9R,10S,11S,13S,14S,17R)-17-Acetyl-9-fluoro-11,17-dihydroxy-6,10,13-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:3918-13-6 Fluorometholone 6ß-Methyl Isomer FML62 (6R,8S,9S,10R,13S,14S,17S)-13-Ethyl-17-ethynyl-6-hydroperoxy-17-hydroxy-11-methylene-1,7,8,10,11,12,13,15,16,17-decahydro-2H-cyclopenta[a]phenanthren-3(6H,9H,14H)-one Etonogestrel RC 4 ETG64 (6R,8S,9S,10R,13S,14S,17S)-17-Acetyl-6-hydroxy-10,13-dimethyl-1,7,8,10,11,12,13,15,16,17-decahydro-2H-cyclopenta[a]phenanthren-3(6H,9H,14H)-one CAS:604-19-3 Progesterone 6ß-Hydroxy PGR62 (6S)-2-(3-Chloro-4-fluorobenzyl)-8-ethyl-10-hydroxy-N,6-dimethyl-1,9-dioxo-1,2,6,7,8,9-hexahydropyrazino[1',2'1,5]pyrrolo[2,3-d]pyridazine-4-carboxamide CAS:869901-69-9 Raltegravir RC 5 RGV65 (6S,12aR)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino [1',2'1,6]pyrido[3,4-b]indole-1,4-dione CAS:171596-28-4 Tadalafil EP Impurity C Tadalafil USP RC C Tadal TLF03 (6S,12aS)-6-(1,3-Benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydro pyrazino [1',2'1,6]pyrido[3,4-b]indole-1,4-dione CAS:629652-72-8 Tadalafil EP Impurity B Tadalafil USP RC B Tada TLF02 (6S,7R,8R,22E,24S)-24-Cyclopropyl-6,87,19-dicyclo-9,10-secochola-5(10),22-diene-1a,3ß,24-triol Calcipotriol EP Impurity I Suprasterol of Calcipo CCP09 (6S,8S,10R,13S,14S,17R)-17-Acetyl-17-hydroxy-6,10,13-trimethyl-7,8,13,15,16,17-hexahydro-6H-cyclopenta[a]phenanthren-3(10H,12H,14H)-one Fluorometholone Impurity E Fluorometholone 9,11-D FML05 (6S,8S,9R,10S,11S,13S,14S)-17-Acetyl-9-fluoro-11-hydroxy-6,10,13-trimethyl-7,8,9,11,12,13,14,15-octahydro-6H-cyclopenta[a]phenanthren-3(10H)-one CAS:2061-13-4 Fluorometholone Impurity F Fluorometholone 16,17- FML06 (6S,8S,9R,10S,11S,13S,14S)-6,9-Difluoro-11,17-dihydroxy-10,13-dimethyl-7,8,9,11,12,13,14,15-octahydro-6H-cyclopenta[a]phenanthren-3(10H)-one Difluprednate Impurity 1 DFN61 (6S,8S,9R,10S,11S,13S,14S)-6,9-Difluoro-11-hydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-7,8,9,11,12,13,14,15-octahydro-6H-cyclopenta[a]phenanthren-3(10H)-one CAS:1270039-29-6 Difluprednate Impurity 3 DFN63 (6S,8S,9R,10S,11S,13S,14S,16R)-2-Chloro-6,9-difluoro-11-hydroxy-10,13,16-trimethyl-7,8,9,11,12,13,15,16-octahydro-6H-cyclopenta[a]phenanthrene-3,17(10H,14H)-dione CAS:136132-00-8 Halometasone RC 1 HMT61 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-17-((Chloromethylthio)carbonyl)-6,9-difluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl acetate CAS:80474-07-3 Fluticasone Acetate Chloromethyl Analog FLT50 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-17-Acetoxy-6,9-difluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carbothioic S-acid CAS:80473-93-4 Fluticasone Carbothioic Acid Acetate FLT62 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-2-Chloro-6,9-difluoro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylic acid CAS:80157-55-7 Halometasone RC 2 HMT62 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-2-Chloro-6,9-difluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:50629-82-8 Halometasone HMT00 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-6,9-Difluoro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carbonyl chloride Fluticasone 17-Chlorocarbonyl Analog FLT51 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-6,9-Difluoro-11-hydroxy-17-((iodomethylthio)carbonyl)-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl acetate CAS:80474-71-1 Fluticasone Acetate Iodomethyl Analog FLT61 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-6,9-Difluoro-11-hydroxy-17-((iodomethylthio)carbonyl)-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate CAS:80474-67-5 Fluticasone Propionate Iodomethyl Analog FLT64 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-6,9-Difluoro-17-((fluoromethyl thio)carbonyl)-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl furan-2-carboxylate CAS:397864-44-7 Fluticasone furoate FLT63 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-6,9-Difluoro-17-((fluoromethylthio)carbonyl)-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl isobutyrate CAS:1648562-63-3 Fluticasone 17-Isobutyrate FLT52 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-6-chloro-9-fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:1744-64-5 Flumethasone Impurity 2 6a-Chloro Dexamethasone FMP52 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-6-Chloro-9-fluoro-17-((fluoromethylthio)carbonyl)-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate Flumethasone Impurity 4 FMP54 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-9-Chloro-17-(2-chloroacetyl)-6,11-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl furan-2-carboxylate CAS:134429-33-7 Mometasone Furoate 6alpha-Hydroxy Impurity MTS43 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-9-Chloro-6-fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:1355648-15-5 Flumethasone Impurity 6 9-Chloro Flumethasone FMP56 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-Fluoromethyl 6,9-difluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-17-(propionyloxy)-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylate CAS:1174034-79-7 Fluticasone Propionate Fluoromethyl Ester Analog FLT56 (6S,8S,9R,10S,11S,13S,14S,16R,17R)-METHYL 6,9-DIFLUORO-11-HYDROXY-10,13,16-TRIMETHYL-3-OXO-17-(PROPIONYLOXY)-6,7,8,9,10,11,12,13,14,15,16,17-DODECAHYDRO-3H-CYCLOPENTA[A]PHENANTHRENE-17-CARBOXYLATE CAS:59860-80-9 Fluticasone Propionate Methyl Ester Analog FLT57 (6S,8S,9R,10S,11S,13S,14S,16R,17S)-6,9-Difluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylic acid Difluocortolone 17-Carboxylic Acid DFC57 (6S,8S,9R,10S,11S,13S,14S,16R,17S)-6,9-Difluoro-11-hydroxy-17-(2-hydroxy-2-methoxyacetyl)-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one Flumethasone Impurity 5 FMP55 (6S,8S,9R,10S,11S,13S,14S,16R,17S)-6,9-Difluoro-11-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:6/9/2607 Difluocortolone DFC00 (6S,8S,9R,10S,11S,13S,14S,16R,17S)-6-Chloro-9-fluoro-11-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one Difluocortolone 6S-Chloro Impurity DFC66 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-17-(2-Chloroacetyl)-6,9-difluoro-11,17-dihydroxy-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:98651-66-2 Diflorasone 21-Chloro Halobetasol DRS50 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-17-(2-Chloroacetyl)-6,9-difluoro-11,17-dihydroxy-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:98651-66-2 Halobetasol 21-Chloro Diflorasone HBS50 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-17-(2-Chloroacetyl)-6,9-difluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate CAS:66852-54-8 Halobetasol Propionate Halobetasol 17-Propionate HBS00 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-6,9-Difluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:2557-49-5 Diflorasone DRS60 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-6,9-Difluoro-11-hydroxy-10,13,16-trimethyl-17-(2-(methylsulfonyloxy)acetyl)-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate CAS:84509-92-2 Diflorasone 17-Proprionate 21-Mesylate Halobetaso DRS54 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-6,9-Difluoro-11-hydroxy-10,13,16-trimethyl-17-(2-(methylsulfonyloxy)acetyl)-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate CAS:84509-92-2 Halobetasol Propionate 21-Mesylate Diflorasone 17 HBS54 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-6,9-Difluoro-11-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl acetate CAS:50630-19-8 Diflorasone 17-O-Acetyl DRS63 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-6,9-Difluoro-11-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate CAS:924726-89-6 Diflorasone 17-Propionate Halobetasol Propionate DRS53 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-6,9-Difluoro-11-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate CAS:924726-89-6 Halobetasol Propionate 21-Hydroxy Analog Difloras HBS53 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-6,9-DIFLUORO-17-HYDROXY-17-(2-HYDROXYACETYL)-10,13,16-TRIMETHYL-3-OXO-6,7,8,9,10,11,12,13,14,15,16,17-DODECAHYDRO-3H-CYCLOPENTA[A]PHENANTHREN-11-YL PROPIONATE Diflorasone 11-O-Propionyl DRS61 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-6-Chloro-17-(2-chloroacetyl)-9-fluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate Halobetasol Propionate 6-Chloro Analog 6-Chloro H HBS56 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-6-Chloro-9-fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one Diflorasone 6-Chloro Halobetasol 6-Chloro 21-Hydr DRS57 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-6-Chloro-9-fluoro-11-hydroxy-10,13,16-trimethyl-17-(2-(methylsulfonyloxy)acetyl)-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate Halobetasol Propionate 6-Chloro 21-Mesylate HBS68 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-6-Chloro-9-fluoro-11-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-Dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate 6a-Desfluoro-6a-chloro-21-hydroxy halobetasol propionat Diflorasone 17-Propionate 6-Chloro Halobetasol Pr DRS58 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-9-Chloro-17-(2-chloroacetyl)-6-fluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate CAS:66852-61-7 Halobetasol Propionate 9-Chloro Analog 9-Chloro H HBS59 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-9-Chloro-6-fluoro-11-hydroxy-10,13,16-trimethyl-17-(2-(methylsulfonyloxy)acetyl)-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate Halobetasol Propionate 9-Chloro 21-Mesylate HBS69 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-9-Chloro-6-fluoro-11-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate CAS:84509-91-1 Diflorasone 17-Propionate 9-Chloro Halobetasol Pr DRS55 (6S,8S,9R,10S,11S,13S,14S,16S,17R)-9-Chloro-6-fluoro-11-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate CAS:84509-91-1 Halobetasol Propionate 9-Chloro 21-Hydroxy Analog HBS55 (6S,8S,9R,10S,11S,13S,14S,17R)-17-Acetyl-9-chloro-11,17-dihydroxy-6,10,13-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one Fluorometholone Impurity C Fluorometholone 9-Chlo FML03 (6S,8S,9R,10S,11S,13S,14S,17R)-17-Acetyl-9-fluoro-11,17-dihydroxy-6,10,13-trimethyl-1,7,8,10,11,12,13,15,16,17-decahydro-2H-cyclopenta[a]phenanthren-3(6H,9H,14H)-one CAS:378-36-9 Fluorometholone Impurity B Fluorometholone 1,2-Di FML02 (6S,8S,9R,10S,11S,13S,14S,17R)-17-Acetyl-9-fluoro-11,17-dihydroxy-6,10,13-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:426-13-1 Fluorometholone FML00 (6S,8S,9R,10S,11S,13S,14S,17R)-17-Acetyl-9-fluoro-11-hydroxy-6,10,13-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl acetate CAS:6/7/3801 Fluorometholone 17-Acetate FML50 (6S,8S,9R,10S,11S,13S,14S,17R)-6,9-Difluoro-11,17-dihydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylic acid CAS:1234557-20-0 Difluprednate Impurity 2 6a-9-Difluoroprednisolon DFN62 (6S,8S,9R,10S,11S,13S,14S,17R)-6,9-Difluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:806-29-1 Isoflupredone RC 2 6a-Fluoro Isoflupredone 6a,?9 IFP62 (6S,8S,9R,10S,11S,13S,14S,17R)-9-Chloro-6-fluoro-11-hydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl butyrate Difluprednate Impurity 8 DFN68 (6S,8S,9R,10S,11S,13S,14S,17R)-9-FLUORO-6,11-DIHYDROXY-17-(2-HYDROXYACETYL)-10,13-DIMETHYL-3-OXO-6,7,8,9,10,11,12,13,14,15,16,17-DODECAHYDRO-3H-CYCLOPENTA[A]PHENANTHREN-17-YL BUTYRATE CAS:1296177-38-2 Difluprednate Impurity 6 DFN66 (6S,8S,9R,10S,13S,14S)-6,9-Difluoro-17-hydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-7,8,13,15,16,17-hexahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one Difluprednate Impurity 4 DFN64 (6S,8S,9S,10R,11S,13S,14S,17R)-17-Acetyl-11,17-dihydroxy-6,10,13-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:6870-94-6 Fluorometholone Impurity A Fluorometholone USP RC FML01 (6S,8S,9S,10R,13S,14S,17S)-17-Acetyl-6-hydroxy-10,13-dimethyl-1,7,8,10,11,12,13,15,16,17-decahydro-2H-cyclopenta[a]phenanthren-3(6H,9H,14H)-one CAS:604-20-6 Progesterone 6a-Hydroxy PGR61 (7R,8R,9S,13S,14S)-3-Hydroxy-13-methyl-7-(9-((R)-4,4,5,5,5-pentafluoropentylsulfinyl)nonyl)-7,8,9,11,12,13,15,16-octahydro-6H-cyclopenta[a]phenanthren-17(14H)-one CAS:403656-89-3 Fulvestrant 17-Ketone FVT51 (7R,8R,9S,13S,14S,17S)-17-hydroxy-13-methyl-7-(9-((R)-4,4,5,5,5-pentafluoropentyl sulfinyl)nonyl)-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-3-yl hydrogen sulfate CAS:261506-26-7 Fulvestrant 3-Sulfate (Acid) FVT54A (7R,8R,9S,13S,14S,17S)-3-(Benzyloxy)-13-methyl-7-(9-(4,4,5,5,5-pentafluoropentylsulfinyl)nonyl)-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-ol Fulvestrant 3-O-Benzyl Impurity FVT52 (7R,8R,9S,13S,14S,17S)-3-Methoxy-13-methyl-7-(9-(4,4,5,5,5-pentafluoropentylsulfinyl)nonyl)-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-ol CAS:1221256-46-7 Fulvestrant 3-O-Methyl Impurity FVT53 (7ß,15a,25R)-7,15-Dihydroxy-3,11,23-trioxolanost-8-en-26-oic acid (2R,6R)-6-((5R,7S,10S,13R,14R,15S)-7,15-dihydroxy-4,4,10,13,14-pentamethyl-3,11-dioxo-2,3,4,5,6,7,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-methyl-4-oxohe CAS:81907-62-2 Ganoderic acid A GDR51 (8R,9S,10R,13S,14S)-10,13-Dimethyl-17-(pyridin-3-yl)-1,7,8,9,10,11,12,13,14,15-decahydro-2H-cyclopenta[a]phenanthren-3(6H)-one CAS:154229-21-7 Abiraterone 3-Oxo 4,5-Dihydro Impurity ABR84 (8R,9S,10R,13S,14S)-3-Ethynyl-10,13-dimethyl-17-(pyridin-3-yl)-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol Abiraterone 3-Ethynyl Impurity ABR82 (8R,9S,10R,13S,14S,17R)-13-Methyl-17-vinyl-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-ol 19-Nor-17a-pregna-4,20-dien-17-ol CAS:5225-38-7 Lynestrenol EP Impurity C 20,21-Dihydro Lynestren LNS03 (8R,9S,10R,13S,14S,17R)-17-Ethynyl-13-methyl-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-ol 19-Norpregn-4-en-20-yn-17-ol CAS:58311-09-4 Lynestrenol EP Impurity B Lynestrenol 17-Epimer LNS02 (8R,9S,10R,13S,14S,17S)-10,13-Dimethyl-6-methylene-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl sulfamate Exemestane 17ß- Hydroxy Sulfamate EXM52 (8R,9S,10R,13S,14S,17S)-13-Ethyl-17-ethynyl-3-methoxy-2,7,8,9,10,11,12,13,14,17-decahydro-1H-cyclopenta[a]phenanthren-17-ol Gestodene Dienol 3-Methyl Ether GTD53 (8R,9S,10R,13S,14S,17S)-17-Ethynyl-13-methyl-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-ol CAS:52-76-6 Lynestrenol LNS00 (8R,9S,13S,14S,17S)-17-Ethynyl-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-2,3,17-triol CAS:50394-89-3 Ethinylestradiol 2-Hydroxy Impurity ETE52 (8R,9S,13S,14S,17S)-17-Ethynyl-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-3,4,17-triol CAS:50394-90-6 Ethinylestradiol 4-Hydroxy Impurity ETE54 (8R,9S,13S,14S,17S)-17-Methoxy-13-methyl-3-propoxy-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene CAS:39219-28-8 Promestriene PMS00 (8S,10S,13S,14S,16R,17R)-10,13,16-Trimethyl-17-(2-(methylsulfonyloxy)acetyl)-3-oxo-6,7,8,10,12,13,14,15,16,17-decahydro-3H-cyclopenta[a]phenanthren-17-yl furan-2-carboxylate CAS:83880-63-1 Mometasone RC 1 MTS61 (8S,10S,13S,14S,16R,17R)-17-(2-Acetoxyacetyl)-10,13,16-trimethyl-3-oxo-6,7,8,10,12,13,14,15,16,17-decahydro-3H-cyclopenta[a]phenanthren-17-yl furan-2-carboxylate CAS:83880-61-9 Mometasone RC 3 MTS63 (8S,10S,13S,14S,16R,17R)-17-(2-Hydroxyacetyl)-10,13,16-trimethyl-3-oxo-6,7,8,10,12,13,14,15,16,17-decahydro-3H-cyclopenta[a]phenanthren-17-yl furan-2-carboxylate CAS:83880-62-0 Mometasone RC 2 MTS62 (8S,13S,14S,17S)-17-Methoxy-13-methyl-3-propoxy-7,8,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthrene Promestriene Dehydro Impurity Delta-9,11 Promestr PMS50 (8S,9R,10S,11S,13S,14S,16R,17R)-4,9-Difluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one Flumethasone Impurity 3 FMP53 (8S,9R,10S,11S,13S,14S,16R,17R)-9-Chloro-11-hydroxy-17-(2-hydroxyacetyl)-13,16-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl furan-2-carboxylate Mometasone Furoate Impurity 1 MTS51 (8S,9R,10S,11S,13S,14S,16R,17R)-9-Fluoro-17-(((fluoromethyl)thio)carbonyl)-11-hydroxy-10,13,16-trimethyl-3,6-dioxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate Fluticasone Propionate 6-Oxo Analog FLT60 (8S,9R,10S,11S,13S,14S,16R,17R)-Ethyl 9-fluoro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylate Dexamethasone Acid Ethyl Ester DMS53 (8S,9R,10S,11S,13S,14S,16R,17S)-9-Chloro-17-(2-chloroacetyl)-11-hydroxy-6,10,13,16-tetramethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl furan-2-carboxylate Mometasone Furoate Impurity 6 MTS56 (8S,9R,10S,11S,13S,14S,16R,17S)-9-Fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-16-yl acetate CAS:3925-42-6 Triamcinolone 16-Acetate Triamcinolone Impurity 1 TCN51 (8S,9R,10S,11S,13S,14S,16S,17R)-9-Fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,11,12,13,15,16,17-octahydro-9H-cyclopenta[a]phenanthrene-3,6(10H,14H)-dione CAS:72559-90-1 Betamethasone 6-Oxo Impurity BMS60 (8S,9R,10S,11S,13S,14S,17R)-17-(2-(1-Ethoxyethoxy)acetyl)-9-fluoro-11,17-dihydroxy-10,13-dimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one Isoflupredone RC 3 IFP63 (8S,9R,10S,11S,13S,14S,17R)-17-(2-Chloroacetyl)-9-fluoro-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate CAS:68791-68-4 Isoflupredone RC 1 IFP61 (8S,9R,10S,11S,13S,14S,17R)-17-Acetyl-9-fluoro-11,17-dihydroxy-10,13-dimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:426-20-0 Fluorometholone 6-Desmethyl Impurity FML56 (8S,9R,10S,11S,13S,14S,17R)-9-Chloro-17-(2-chloroacetyl)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl furan-2-carboxylate CAS:1404070-67-2 Mometasone Furoate Impurity 9 MTS59 (8S,9R,10S,11S,13S,14S,17R)-9-Fluoro-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-7,8,11,12,13,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-3(9H,10H,14H)-one CAS:338-95-4 Isoflupredone IFP00 (8S,9R,10S,13S,14S,16R,17R)-9-CHLORO-17-(2-CHLOROACETYL)-10,13,16-TRIMETHYL-3,11-DIOXO-6,7,8,9,10,11,12,13,14,15,16,17-DODECAHYDRO-3H-CYCLOPENTA[A]PHENANTHREN-17-YL FURAN-2-CARBOXYLATE Mometasone Furoate Impurity 4 MTS54 (8S,9R,10S,13S,14S,16S,17R)-17-(2-Acetoxyacetyl)-9-fluoro-10,13,16-trimethyl-3,11-dioxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate Betamethasone 11-Oxo 21-Acetate 17-Propionate BMS74 (8S,9R,10S,13S,14S,16S,17R)-9-Fluoro-17-(2-hydroxyacetyl)-10,13,16-trimethyl-3,11-dioxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate Betamethasone 11-Oxo 17-Propionate BMS72 (8S,9S,10R,11R,13S,14S)-11-Hydroxy-13-methyl-1,7,8,9,10,11,12,13,15,16-decahydro-2H-cyclopenta[a]phenanthrene-3,17(6H,14H)-dione CAS:6615-00-5 Etonogestrel RC 5 ETG65 (8S,9S,10R,11R,13S,14S,17S)-17-(2,2-DIHYDROXYACETYL)-11-HYDROXY-10,13-DIMETHYL-1,2,6,7,8,9,10,11,12,13,14,15,16,17-TETRADECAHYDRO-3H-CYCLOPENTA[A]PHENANTHREN-3-ONE Hydrocortisone RC 2 Hydrocortisone Glyoxal Hydrat HCS62 (8S,9S,10R,11S,13S,14S)-11-Hydroxy-10,13-dimethyl-1,7,8,9,10,11,12,13,15,16-decahydro-2H-cyclopenta[a]phenanthrene-3,17(6H,14H)-dione Hydrocortisone RC 3 7-Keto Hydroxyprogesterone HCS63 (8S,9S,10R,11S,13S,14S)-17-(2,2-Dihydroxyacetyl)-11-hydroxy-10,13-dimethyl-7,8,9,11,12,13,14,15-octahydro-6H-cyclopenta[a]phenanthren-3(10H)-one Prednisolone 16,17-Dehydro 21-Hydroxy PNS57 (8S,9S,10R,11S,13S,14S,17R)-11-HYDROXY-17-(2-HYDROXYACETYL)-10,13-DIMETHYL-7,8,9,10,11,12,13,14,15,17-DECAHYDRO-3H-CYCLOPENTA[A]PHENANTHRENE-3,16(6H)-DIONE CAS:111088-90-5 Budesonide RC 4 BDS64 (8S,9S,10R,11S,13S,14S,17R)-Chloromethyl 17-(ethoxycarbonyloxy)-11-hydroxy-10,13-dimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-17-carboxylate CAS:82034-20-6 Loteprednol Etabonate 1,2-Dihydro LTP54 (8S,9S,10R,11S,13S,14S,17R)-Ethyl 17-(ethoxycarbonyloxy)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylate CAS:182069-19-8 Loteprednol Etabonate USP RC C Loteprednol Etabo LTP23 (8S,9S,10R,11S,13S,14S,17R)-Iodomethyl 17-((Ethoxycarbonyl)oxy)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylate Loteprednol Etabonate Iodomethyl Analog LTP53 (8S,9S,10R,13S,14S)-13-Ethyl-3-ethynyl-3-hydroxy-11-methylene-1,2,3,7,8,9,10,11,12,13,15,16-dodecahydro-6H-cyclopenta[a]phenanthren-17(14H)-one Desogestrel RC 1 DSG51 (8S,9S,10R,13S,14S)-3-Ethoxy-13-ethyl-11-methylene-1,7,8,9,10,11,12,13,15,16-decahydro-2H-cyclopenta[a]phenanthren-17(14H)-one Etonogestrel RC 1 ETG61 (8S,9S,10R,13S,14S,17R)-Chloromethyl 17-((ethoxycarbonyl)oxy)-10,13-dimethyl-3,11-dioxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylate CAS:207670-54-0 Loteprednol Etabonate USP RC H 11-Keto Lotepredno LTP28 (8S,9S,10R,13S,14S,17S)-13-Ethyl-17-ethynyl-11,17-dihydroxy-11-methyl-1,7,8,10,11,12,13,15,16,17-decahydro-2H-cyclopenta[a]phenanthren-3(6H,9H,14H)-one Etonogestrel RC 2 ETG62 (8S,9S,10R,13S,14S,17S)-17-Acetyl-10,13-dimethyl-1,7,8,10,11,12,13,15,16,17-decahydro-2H-cyclopenta[a]phenanthrene-3,6(9H,14H)-dione CAS:8/5/2243 Progesterone 6-Keto PGR60 (8S,9S,10R,13S,14S,17S)-17-Ethynyl-17-hydroxy-13-methyl-11-methylene-1,7,8,10,11,12,13,15,16,17-decahydro-2H-cyclopenta[a]phenanthren-3(6H,9H,14H)-one CAS:54024-10-1 Etonogestrel 18-Desmethyl ETG51 (8S,9S,10S,11S,13S,14R,17S)-17-(2-Acetoxyacetyl)-9-fluoro-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl butyrate Difluprednate Impurity 7 DFN67 (8S,9S,10S,13S,14S,17S)-17-Ethynyl-10-hydroxy-13-methyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate Norethindrone Acetate 10ß-Hydroxy Impurity NEA60 (8S,9S,13S,14S)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-3-ol CAS:53-63-4 Estradiol 17-Desoxy Impurity ETL50 (8S,9S,13S,14S,17R)-17-Ethynyl-4,13-dimethyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-1,17-diol CAS:1034298-00-4 Ethinylestradiol 1-Hydroxy 4-Methyl Impurity ETE51 (9S,12E,14S,15R,16S,17R,18R,19R,20S,21S,22E,24Z)-6,18,20-Trihydroxy-14-methoxy-7,9,15,17,19,21,25-heptamethyl-1'-(2-methylpropyl)-5,10,26-trioxo-3,5,9,10-tetrahydrospiro[9,4-(epoxypentadeca[1,11,13]trienimino)-2H-furo[2',3'7,8]naphtho[1,2-d]imidazole-2,4' CAS:72559-06-9 Rifabutin RFB00 (9S,12E,14S,15R,16S,17R,18R,19R,20S,21S,22E,24Z)-Spiro[9,4-(epoxypentadeca[1,11,13]trienimino)-2H-furo[2',3'7,8]naphth[1,2-d]imidazole-2,4'-piperidine]-5,10,26(3H,9H)-trione, 16-(acetyloxy)-6,18,20-trihydroxy-14-methoxy-7,9,15,17,19,21,25-heptamethyl-1'-( CAS:645406-37-7 Rifabutin N-Oxide RFB50 (9Z,12Z)-N-[(3S,6S,9S,11R,15S,18S,20R,21R,24S,25S,26S)-6-[(1S,2S)-1,2-dihydroxy-2-(4-hydroxyphenyl)ethyl]-11,20,21,25-tetrahydroxy-3,15-bis[(1R)-1-hydroxyethyl]-26-methyl-2,5,8,14,17,23-hexaoxo-1,4,7,13,16,22-hexaazatricyclo[22.3.0.0?,¹³]heptacosan-18-yl] CAS:54651-05-7 Anidulafungin Echinocandin B Impurity Echinocandi ADF02C (9Z,12Z)-N-[(3S,6S,9S,11R,15S,18S,20R,21R,24S,25S,26S)-6-[(1S,2S)-1,2-dihydroxy-2-(4-hydroxyphenyl)ethyl]-11,20,21,25-tetrahydroxy-3,15-bis[(1R)-1-hydroxyethyl]-26-methyl-2,5,8,14,17,23-hexaoxo-1,4,7,13,16,22-hexaazatricyclo[22.3.0.0?,¹³]heptacosan-18-yl] CAS:54651-05-7 Anidulafungin Echinocandin B Impurity Echinocandi ADF02P (aR,ßS)-ß-(Benzoylamino)-a-hydroxy-benzenepropanoic Acid (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-Bis(acetyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-12-[(1-oxopentyl)oxy]-7,11-methano-1H-cyclodeca[3,4 CAS:213767-22-7 Paclitaxel 2-Pentanoate Analog PCX52 (E)-8-Ethyl-5,6,8,11,12,13,14,15,16,17,18,19,24,25,26,26a-Hexadecahydro-5,19-dihydroxy-3-[(E)-2-(4-hydroxy-3-methoxycyclohexyl)-1-methylvinyl]-14,16-dimethoxy-4,10,12,18-tetramethyl-15,19-epoxy-3H-pyrido[2,1-c][1,4] oxaazacyclotricosine-1,7,20,21-(4H,23H) CAS:135635-46-0 Tacrolimus USP RC A TCL21 (R)-((1S,3R,7S,8S)-8-(2-((2R,4R)-4-(tert-Butyldimethylsilyloxy)-6-oxo-tetrahydro-2H-pyran-2-yl)ethyl)-3,7-dimethyl-1,2,3,7,8,8a-hexahydronaphthalen-1-yl) 2-methylbutanoate CAS:82978-03-8 Lovastatin Impurity 1 LVS61 |