1162-60-3 17-Ethinyl-7-alpha-methyl-19-nortestosterone 17-Hydroxy-7-alpha-methyl-19-nor-17-alpha-preg-4-en-20-yn-3-one 19-Nor-17-alpha-preg-4-en-20-yn-3-one, 17-hydroxy-7-alpha-methyl- 19-Norpregn-4-en-20-yn-3-one, 17-hydroxy-7-methyl-, (7alpha,17alpha)- (9CI) 7-alpha-Methyl-17-ethinyl-19-nortestosterone 7alpha-Methyl-17-ethinyl-19-nortestosterone BRN 4263193 NSC 142228 U-13,851