左炔诺孕酮EP杂质K 货号:L005011 英文名:Levonorgestrel EP Impurity K 同义词:(8R,9S,10R,13S,14S,17S)-13-ethyl-17-hydroxy-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3(2H)-one CAS号:793-55-5 分子式:C19H28O2 分子量:288.42 询价订购