3'H-Cyclopropa(1,2)pregna-1,4,6-triene-3,20-dione, 6-chloro-1,2-dihydro-17-hydroxy-, (1beta,2beta)-

Cyproterone, 1alpha,2 alpha,9 beta,10 alpha-Isomer

An anti-androgen that, in the form of its acetate (CYPROTERONE ACETATE), also has progestational properties. It is used in the treatment of hypersexuality in males, as a palliative in prostatic carcinoma, and, in combination with estrogen, for the therapy of severe acne and hirsutism in females.