恶喹酸EP杂质B 货号:O037002 英文名:Oxolinic Acid EP Impurity B 同义词:ethyl 5-ethyl-8-oxo-5,8-dihydro-[1,3]dioxolo[4,5-g]quinoline-7-carboxylate CAS号:N/A 分子式:C15H15NO5 分子量:289.28 询价订购