苯氧甲基青霉素EP杂质A 货号:P080003 英文名:Phenoxymethylpenicillin EP Impurity A 同义词:(2S,5R,6R)-3,3-dimethyl-7-oxo-6-(2-phenylacetamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid CAS号:61-33-6 分子式:C16H18N2O4S 分子量:334.39 询价订购