左炔诺孕酮EP杂质N 货号:L005014 英文名:Levonorgestrel EP Impurity N 同义词:(8R,9S,13S,14S)-13-ethyl-6,7,8,9,11,12,13,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,17(2H,4H)-dione CAS号:4222-96-2 分子式:C19H26O2 分子量:286.41 询价订购