头孢噻吩杂质A 货号:C080001 英文名:Cefalotin Impurity A 同义词:(6R,7R)-3-methyl-8-oxo-7-(2-(thiophen-2-yl)acetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid CAS号:34691-02-6 分子式:C14H14N2O4S2 分子量:338.4 询价订购