| 英文同义词: | 2-[2-(3,4-dihydro-6-methoxy-1(2H)-naphthylidene)ethyl]-2-ethylcyclopentane-1,3-dione;2-[2-(3,4-Dihydro-6-methoxynaphthalen-1(2H)-ylidene)ethyl]-2-ethyl-1,3-cyclopentanedione;2-[2-(3,4-dihydro-6-methoxy-1(2H)-naphthalenylidene)ethyl]-2-ethyl-1,3-cyclopentanedione;Levonorgestrel Impurity 2;3-methoxy-13-ethyl-8,14-seco-1,3,5(10),9(11)-estratetraen-14,17-dione;1,3-Cyclopentanedione, 2-[2-(3,4-dihydro-6-methoxy-1(2H)-naphthalenylidene)ethyl]-2-ethyl-;2-ethyl-2-[(2Z)-2-(6-methoxy-3,4-dihydro-2H-naphthalen-1-ylidene)ethyl]cyclopentane-1,3-dione |