4-Aza-5a-androstan-1-ene-3-one-17b-carboxylic acid

Also known as: 4-Aza-5a-androstan-1-ene-3-one-17b-carboxylic acid, Dutasteride EP Impurity A, M4 ACID, 3-Oxo-4-aza-5a-androst-1-ene-17b-carboxylic acid, 3-Oxo-4-aza-5a-androst-1-ene-17-carboxylic acid, 4-Aza-5a-androstan-1-en-3-one-17β-carboxylic acid, (5α,17β)-3-Oxo-4-azaandrost-1-ene-17-carboxylic acid, Dutasteride acid, Finasteride intermediate 8, 4-AZA-5ALPHA-ANDROSTA-1-EN-3-ONE-17BETA-CARBOXYLIC ACID, (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-carboxylic acid, 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-, (4aR,4bS,6aS,7S,9aS,9bS,11aR)-

4-Aza-5a-androstan-1-ene-3-one-17b-carboxylic acid (CAS 104239-97-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C19H27NO3 and a molecular weight of 317.423 g/mol. Key properties include a melting point of 295-297ºC, a boiling point of 527.3±50.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 272.7±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

104239-97-6

Jingsj CID

J-1028749-1

Molecular Formula

C₁₉H₂₇NO₃

Molecular Weight

317.423 g/mol

Category

Organic Acids

Last updated

8/21/2026