3.alpha.-Etiocholanolone 5-Isoandrosterone 5.beta.-Androstan-17-one, 3.alpha.-hydroxy- 5.beta.-Androsterone 53-42-9 Androstan-17-one, 3-hydroxy-, (3.alpha.,5.beta.)- Androsterone, (5.beta.)- Etiocholan-3.alpha.-ol-17-one Etiocholanolone NSC50908