Similar names: 19-Nor-17α-pregn-4-en-3-one, 17-hydroxy- (8CI); 19-Norandrost-4-en-3-one, 17α-ethyl-17-hydroxy- (6CI); (17α)-17-Hydroxy-19-norpregn-4-en-3-one; 17-ENT; 17-Ethyl-19-nortestosterone; 17α-Ethyl-17-hydroxy-13β-methylgon-4-en-3-one; 17α-Ethyl-17-hydroxy-19-nor-4-androsten-3-one; 17α-Ethyl-17-hydroxy-4-estren-3-one; 17α-Ethyl-17-hydroxy-4-norandrosten-3-one; 17α-Ethyl-17β-hydroxy-19-norandrost-4-en-3-one; 17α-Ethyl-17β-hydroxyestr-4-en-3-one; 17α-Ethyl-19-nortestosterone; 17α-Ethylnortestosterone; 17β-Hydroxy-17α-ethylestr-4-en-3-one; 19-Nortestosterone, 17-ethyl-; CB 8022; NSC 70581; NSC 9893; Nileva; Nilevar; Norethandrolone; Pronabol; SC 5914; Solevar; U 6817