苯丁酸甘油酯杂质7 货号:G042007 英文名:Glycerol phenylbutyrate Impurity 7 同义词:1,3-dihydroxypropan-2-yl 4-phenylbutanoate CAS号:1443417-17-1 分子式:C13H18O4 分子量:238.28 询价订购