Synonyms: | NORETHYNDREL;NORETHYNODREL;(17-alpha)-17-Hydroxy-19-norpregn-5(10)-en-20-yn-3-one;(17alpha)-19-norpregn-5(10)-en-20-yn-3-on;13-methyl-17-ethynyl-17-hydroxy-1,2,3,4,6,7,8,9,11,12,13,14,16,17-tetradecahyd;17-alpha-ethinyl-17-beta-hydroxy-delta(sup5(10))-estren-3-one;17alpha-Ethinyl-17beta-hydroxy-delta5(10)-estren-3-one;17-alpha-ethinyl-5,10-estrenolone |