左炔诺孕酮EP杂质P 货号:L005016 英文名:Levonorgestrel EP Impurity P 同义词:(8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-4,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3(2H)-one CAS号:100021-05-4 分子式:C21H28O2 分子量:312.45 询价订购