Finasteride EP Impurity B

Finasteride EP Impurity B

103335-41-7

C₂₀H₂₉NO₃

4-azaandrost-1-ene-17-carboxylicacid, 3-oxo-, methyl ester, (5α,17β)- ; 17β-(methoxycarbonyl)-4-aza-5α-androst-1-en-3-one ; methyl 3-oxo-4-aza-5a-androst-1-ene-17β-carboxylate ; 3-oxo-4-aza-5α-androst-1-en-17β-carboxylic acid methyl ester ; methyl 4-aza-5α-androsta-1-en-3-one-17β-carboxylate ; (4ar,4bs,6as,7s,9as,9bs,11ar)-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-4a,6a-dimethyl-2-oxo- ; 3-oxo-4-aza-5α-αndrost-1-ene-17β-carboxylic acid methyl ester ; finasteride methyl ester analog ; methyl (4ar,4bs,6as,7s,9as,9bs,11ar)-4a,6a-dimethyl-2-oxo-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-1h-indeno[5,4-f]quinoline-7-carboxylate ; methyl 3-oxo-4-aza-5-alpha-androst-1-ene-17-beta-carboxylate ; (4ar,4bs,6as,7s,9as,9bs,11ar)-methyl 4a,6a-dimethyl-2-oxo-2,4a,4b,5,6,6a,7, 8,9,9a,9b,10,11,11a-t ; 1h-indeno[5,4-f]quinoline-7-carboxylic acid, 2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-4a,6a-dimethyl-2-oxo-, methyl ester, (4ar,4bs,6as,7s,9as,9bs,11ar)-