13-Methyl-17-ethynyl-17-hydroxy-1,2,3,4,6,7,8,9,11,12,13,14,16,17-tetradecahydro-15H-cyclopenta[a]phenanthren-3-one;17-Hydroxy-19-nor-17?-pregn-5(10)-en-20-yn-3-one; (17?)-17-hydroxy-19-Norpregn-5(10)-en-20-yn-3-one; Norethindrone EP Impurity D;Norethynodrel
13-Methyl-17-ethynyl-17-hydroxy-1,2,3,4,6,7,8,9,11,12,13,14,16,17-tetradecahydro-15H-cyclopenta[a]phenanthren-3-one;17-Hydroxy-19-nor-17?-pregn-5(10)-en-20-yn-3-one; (17?)-17-hydroxy-19-Norpregn-5(10)-en-20-yn-3-one; Norethindrone EP Impurity D;Norethynodrel