20alpha-Cortolone 3alpha,17alpha,20alpha,21-Tetrahydroxy-5beta-pregnan-11-one 516-42-7 5beta-Pregnan-11-one, 3alpha,17,20alpha,21-tetrahydroxy- (8CI) 5beta-Pregnane-3alpha,17,20alpha,21-tetrol-11-one Cortolon Cortolone NSC 59872 Pregnan-11-one, 3,17,20,21-tetrahydroxy-, (3alpha,5beta,20S)- (9CI)