.alpha.-Cortolone 20.alpha.-Cortolone 3.alpha.,17.alpha.,20.alpha.,21-Tetrahydroxy-5.beta.-pregnan-11-one 5.beta.-Pregnan-11-one, 3.alpha.,17,20.alpha.,21-tetrahydroxy- 5.beta.-Pregnane-3.alpha.,17,20.alpha.,21-tetrol-11-one 516-42-7 Cortolon Cortolone NSC59872 Pregnan-11-one, 3,17,20,21-tetrahydroxy-, (3.alpha.,5.beta.,20S)-