吡咯他尼EP杂质B 货号:P091002 英文名:Piretanide EP Impurity B 同义词:(E)-methyl 3-(N-(2-methylpropylidene)sulfamoyl)-4-phenoxy-5-(pyrrolidin-1-yl)benzoate CAS号:N/A 分子式:C22H26N2O5S 分子量:430.52 询价订购