3α-Hydroxy-5α-androstan-17-one sulfate with Pyridine is an intermediate in the synthesis of Androsterone Sulfate Sodium Salt (A637408), which is a metabolite of Androsterone (A637535), a steroid hormone with weak androgenic activity. It is metabolized from Testosterone (T155000) in the liver and is used in doping analysis to detect testosterone misuse. Controlled Substance.