19-Nor-17.alpha.-pregn-4-en-17-ol 19-Nor-17.alpha.-pregn-4-en-17.beta.-ol 19-Norpregn-4-en-17-ol, (17.alpha.)- 965-90-2 Durabolin-O Duraboral ETHYLESTRENOL Estr-4-en-17.beta.-ol, 17-ethyl- Ethylnandrol Maxibalin Maxibolin NSC37726 Neodurabolin Orabolin Org-483 Orgabolin Orgaboral