Cyproterone Acetate EP Impurity D

Chemical Name: (1S,8R,9S,10S,13S,14S,17R)-17-acetyl-1-(chloromethyl)-10,13-dimethyl-3,6-dioxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate ; 1α-(chloromethyl)-3,6,20-trioxopregn-4-en-17-yl acetate,

Synonym: Leflunomide