左炔诺孕酮杂质38 货号:L005038 英文名:Levonorgestrel Impurity 38 同义词:(E)-2-ethyl-2-(2-(6-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethyl)cyclopentane-1,3-dione CAS号:62298-52-6 分子式:C20H24O3 分子量:312.40 询价订购