17 alpha-propionate

2 years -20°C Powder, 2 weeks 4°C in DMSO, 2 months -80°C in DMSO

17 alpha-propionate is a new topical and peripherally selective androgen antagonist.Although it displayed a strong local antiandrogenic activity in hamsters flank organ test, it did not exhibit antiandrogenic activity in rats after subcutaneous injection, nor did it affect gonadotropins hypersecretion when injected to parabiotic rats. As topical antiandrogen, the steroid resulted about 4 times more active than progesterone and, when compared to known antiandrogen standards, it was about 3 times more potent than flutamide, about 2 times more effective than finasteride and approximately as active as cyproterone acetate. [1]