Where can get good Cyproterone acetate

Where can get good Cyproterone acetate? There's a lot of people who don't know about it, and here's the introduction:

Cyproterone (Cyproterone) is a white crystalline powder chemicals, alias: Cyproterone acetate, chemical formula for C24H29ClO4, molecular weight of 416.93800, 237.5 ~ 240 DHS melting point C, almost insoluble in water, slightly soluble in anhydrous ethanol. Soluble in acetone, soluble in methanol, easily soluble in dichloromethane, avoiding light. Cycloprogesterone is used clinically to treat male libido, women's trichosis, acne, precocious puberty, hypersexuality, and prostate cancer.