英文别名17β-Cyanmethyl-oestra-1,3,5(10)-trien-3,17β-diol; 19-Norpregna-1,3,5(10)-triene-21-nitrile, 3,17-dihydroxy-, (17α)-; Dienogest Impurity 4; 17α-Cyanomethylestra-1,3,5(10)-triene-3,17β-diol; [3,17-Dihydroxyestra-1,3,5(10)-trien-17α-yl]acetonitrile; 2-((8R,9S,13S,14S,17R)-3,17-Dihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl)acetonitrile; 17alpha-Cyanomethylestra-1,3,5(10)-triene-3,17beta-diol; 17-(Cyanomethyl)estra-1,3,5(10)-triene-3,17beta-diol; (17alpha)-3,17-Dihydroxy-19-norpregna-1,3,5(10)-triene-21-nitrile; 3,17-Dihydroxy-19-norpregna-1,3,5(10)-triene-21-nitrile 
