左炔诺孕酮EP杂质Q 货号:L005017 英文名:Levonorgestrel EP Impurity Q 同义词:(8R,9S,13S,14S,17S)-13-ethyl-3-methoxy-4,6,7,8,9,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-ol CAS号:14507-49-4 分子式:C20H30O2 分子量:302.45 询价订购