S-23
SARM S-23 from China
What is S-23?
Full Name: (2S)-N-(4-cyano-3-trifluoromethylphenyl)-3-(3-fluoro-4-chlorophenoxy)-2-hydroxy-2-methyl-propanamide
S-23 is an investigational selective androgen receptor modulator (SARM), Inc as a potential male hormonal contraceptive. It binds to the androgen receptor more strongly than older drugs such as
andarine with a Ki of 1.7nM, and in animal studies it showed both a good ratio of anabolic to androgenic effects, and dose-dependent suppression of spermatogenesis with spontaneous recovery after
cessation of treatment.