Synonyms:
dienogest ; dienogestril ; endometrion ; dinagest ; 17a-cyanomethyl-17b-hydroxyestra-4, 9-dien-3-one ; 17a-cyanomethyl-17-hydroxyestra-4, 9-dien-3-one ; contraceptive (oral) ; dienogestrel ; sts 557 ; 17α-cyanomethyl-17β-hydroxyestra-4,9-dien-3-one