左炔诺孕酮杂质26 货号:L005026 英文名:Levonorgestrel Impurity 26 同义词:(9R,10R,13S,17R)-13-ethyl-17-ethynyl-17-hydroxy-9,10,11,12,13,15,16,17-octahydro-1H-cyclopenta[a]phenanthren-3(2H)-one CAS号:N/A 分子式:C21H24O2 分子量:308.41 询价订购