左炔诺孕酮EP杂质M 货号:L005013 英文名:Levonorgestrel EP Impurity M 同义词:(8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-8,9,10,11,12,13,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3(2H)-one CAS号:51087-61-7 分子式:C21H26O2 分子量:310.43 询价订购