Cyproterone acetate English Synonyms: 1,2-alpha-methylene-6-chloro-delta-(sup4,6)-pregnadiene-17-alpha-ol-3,20-dio;1,2-alpha-methylene-6-chloro-delta(sup6)-17-alpha-hydroxyprogesteroneacetat;1,2-alpha-methylene-6-chloro-pregna-4,6-diene-3,20-dione17-alpha-acetate;17-alpha-acetoxy-6-chloro-1-alpha,2-alpha-methylenepregna-4,6-diene-3,20-dio;20-dione,6-chloro-17-hydroxy-1-alpha,2-alpha-methylene-pregna-6-diene-3;6)-pregnadiene-17-alpha-ol-3,20-dione17-2-alpha-methylene-6-chloro-(sup4;6-chlor-delta(sup6)-1,2-alpha-methylen-17-alpha-hydroxyprogesteronacetat;6-chloro-1,2-alpha-methylene-17-alpha-hydroxy-delta(sup6)-progesteroneaceta CAS NO.: 427-51-0 Assay: 98% Molecular Formula:C24H29ClO4 Molecular Weight:416.94 Quality Standard: EP5 Packing:1kg/foil bag Appearance: White crystalline powder Usage: Anti-androgen for the treatment of men with BPH, and can be used as male contraceptive