Synonyms: MLS002638434;Norethinynodrel;Norethynodral;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;NSC15432;8-Isonorethynodrel;AC1L1IDV;AC1Q6OUG;17.alpha.-Ethinyl-.delta.(sup)-5,10-19-nortestosterone;Oprea1_318061;19-Norpregn-5(10)-en-20-yn-3-one, 17-hydroxy-, (17.alpha.)-;HMS3089L12;AR-1C0771;NSC109510;17.alpha.-Ethinyl-5,10-estrenolone;NSC-109510;17.alpha.-Ethinyl-estra(5,10)eneolone;SMR001547914;17.alpha.-Ethynyl-5(10)-estren-17-ol-3-one;WLN: L E5 B666 OV MUTJ E1 F1UU1 QQ;17.alpha.-Ethynyl-17-hydroxy-5(10)-estren-3-one;17.alpha.-Ethynylestr-5(10)-en-17.beta.-ol-3-one;17.alpha.-Ethynyl-estr-5(10)-en-3-on-17.beta.-ol;19-Norpregn-5(10)-en-20-yn-3-one, (17.alpha.)-;Estr-5(10)-en-3-one, 17.alpha.-ethynyl-17-hydroxy-;17.alpha.-Ethynyl-17.beta.-hydroxyester-5(10)-en-3-one;17.alpha.-Ethynyl-17.beta.-hydroxyestr-5(10)-en-3-one;17-Hydroxy(17.alpha.)-19-norpregn-5(10)-en-20-yn-3-one;17-Hydroxy-19-nor-17.alpha.-pregn-5(10)-en-20-yn-3-one;17.alpha.-Ethynyl-19-nor-5(10)-androsten-17.beta.-ol-3-one;19-nor-17.alpha.-Pregn-5(10)-en-20-yn-3-one, 17-hydroxy-;17.alpha.-Ethinyl-17.beta.-hydroxy-.delta.(sup 5(10))-estren-3-one;17.alpha.-Ethynyl-17.beta.-hydroxy-.delta.(sup 5(10))-estren-3-one;17.alpha.-Ethynyl-17.beta.-hydroxy-3-oxo-.delta.(sup 5(10))-estrene;13577-86-1;17-ethynyl-17-hydroxy-13-methyl-1,2,4,6,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one