左炔诺孕酮EP杂质L 货号:L005012 英文名:Levonorgestrel EP Impurity L 同义词:(8R,9S,10R,13S,14S)-13-ethyl-7,8,9,10,11,12,13,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,17(2H,6H)-dione CAS号:21800-83-9 分子式:C19H26O2 分子量:286.41 询价订购