title: Aspects of stereochemistry. XXI. Hydrogenation of 3-oxo-delta-4-steroids over a palladium-calcium carbonate catalyst.
mesh_terms: D000731:Androstanes; D002119:Calcium Carbonate; D002384:Catalysis; D055598:Chemical Phenomena; D002621:Chemistry; D006859:Hydrogen; D010165:Palladium; D013739:Testosterone
chemical_list: D000731:Androstanes; D013739:Testosterone; D010165:Palladium; D006859:Hydrogen; D002119:Calcium Carbonate