This is a mixture of Abiraterone Acetate and small amounts of the ten related compounds as follow :

- Abiraterone Acetate - (17-(Pyridin-3-yl)androsta-5,16-dien-3β-yl acetate) : ~98,8 %

- Abiraterone (17-(Pyridin-3-yl)androsta-5,16-dien-3β-ol) : ~0,1 %
- Abiraterone ethyl ether (3β-Ethoxy-17-(pyridin-3-yl)androsta-5,16-diene) : ~0,1 %
- Abiraterone isopropyl ether (3β-Isopropoxy-17-(pyridin-3-yl)androsta-5,16-diene) : ~0,1 %
- Anhydro abiraterone ; (17-(Pyridin-3-yl)androsta-3,5,16-triene) : ~0,1 %
- O-Chlorobutylabiraterone ; (3β-(4-Chlorobutoxy)-17-(pyridin-3-yl)androsta-5,16-diene) : ~0,1 %
- 3-Deoxy-3-acetyl abiraterone-3-ene ; (1-[17-( Pyridin-3-yl)androsta-3,5,16-trien-3-yl]ethanone) : ~0,1 %
- 3-Deoxy 3-chloroabiraterone (3β-Chloro-17-(pyridin-3-yl)androsta-5,16-diene) : ~0,1 %
- α-Epoxyabiraterone acetate ; (17-(Pyridin-3-yl)-16α,17α-epoxyandrost-5-en-3β-yl acetate) : ~0,1 %
- β-Epoxyabiraterone acetate ; (17-(Pyridin-3-yl)-16β,17β-epoxyandrost-5-en-3β-yl acetate) : ~0,1 %
- 7-Ketoabiraterone acetate ; (7-Oxo-17-(pyridin-3-yl)androsta-5,16-dien-3β-yl acetate) : ~0,2 %