英文别名2-Methyl Ethynyl Estradiol; (17α)-2-Methyl-19-norpregna-1,3,5(10)-trien-20-yne-3,17-diol; 2-Methyl-19-nor-17α-pregna-1,3,5(10)-trien-20-yne-3,17-diol; Ethinylestradiol EP Imp M; (8R,9S,13S,14S,17R)-17-ethynyl-2,13-dimethyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diol; Ethinylestradiol Impurity 13 
