英文别名:
Levonorgestrel IMpurity N;13-Ethylgon-5(10)en-3,17-dione;(8R,9S,13S,14S)-13-ethyl-1,2,4,6,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-3,17-dione;Levonorgestrel EP impurity N;Levonorgestrel Impurity 14(Levonorgestrel EP Impurity N);13β-Ethylgon-5(10)-ene-3,17-dione;Levonorgestrel EP IMP N;Gon-5(10)-ene-3,17-dione, 13-ethyl-