左炔诺孕酮杂质27 货号:L005027 英文名:Levonorgestrel Impurity 27 同义词:(5S,8R,9S,13S,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-5,6,7,8,9,11,12,13,14,15,16,17-dodecahydro-2H-cyclopenta[a]phenanthren-3(4H)-one CAS号:N/A 分子式:C21H28O2 分子量:312.45 询价订购