左炔诺孕酮EP杂质O 货号:L005015 英文名:Levonorgestrel EP Impurity O 同义词:(5R,8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-5-methoxytetradecahydro-1H-cyclopenta[a]phenanthren-3(2H)-one CAS号:155683-60-6 分子式:C22H32O3 分子量:344.49 询价订购