英文别名(8R,9S,10R,13S,14S,17R)-3,17-diethynyl-13-methyl-2,7,8,9,10,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-17-ol; (17α)-3-Ethynyl-19-norpregna-3,5-dien-20-yn-17-ol; Norethindrone Impurity 2; 3,17-diethynyl-19-norandrosta-3,5-diene-17Beta-ol; Diethinylestradienol; Norethindrone EP Impurity E; Norethindrone Impurity 5 
