17-ENT 17-Ethyl-19-nortestosterone 17.alpha.-Ethyl-19-nortestosterone 17.alpha.-Ethylnortestosterone 19-Nor-17.alpha.-pregn-4-en-3-one, 17-hydroxy- 19-Norpregn-4-en-3-one, 17-hydroxy-, (17.alpha.)- 19-Nortestosterone, 17-ethyl- 52-78-8 8022 C. B. Estr-4-en-3-one, 17.alpha.-ethyl-17-hydroxy- NORETHANDROLONE NSC9893 Nileva Nilevar Pronabol SC 5914