Related categories : Pharmaceutical Ingredients; Molecular Weight : 391.5 g/mol. Androsta-5,16-Dien-3-Ol, 17-(3-Pyridinyl)-, Acetate (Ester), (3.Beta.)- ; (3-Beta) 17-(3-Pyridinyl)Androsta-5,16-Dien-3-Yl Acetate.