乙胺嘧啶杂质5 货号:P086005 英文名:Pyrimethamine Impurity 5 同义词:2,4-bis(4-chlorophenyl)-3-ethyl-3-hydroxypentanedinitrile CAS号:N/A 分子式:C19H16Cl2N2O 分子量:359.25 询价订购