16.alpha.-Methylpregnenolone 16394-71-1 3.beta.-Hydroxy-16.beta.-methyl-5-pregnen-20-one NSC75642 Pregn-5-en-20-one, 3-hydroxy-16-methyl-, (3.beta.,16.alpha.)- Pregn-5-en-20-one, 3.beta.-hydroxy-16.alpha.-methyl-