左炔诺孕酮杂质28 货号:L005028 英文名:Levonorgestrel Impurity 28 同义词:(5S,8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-4,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3H-cyclopenta[a]phenanthren-3-one CAS号:N/A 分子式:C21H28O2 分子量:312.45 询价订购