英文别名Norfloxacin EP Impurity B; 7-[(2-Aminoethyl)amino]-1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid HCl; Norfloxacin Impurity 2(Norfloxacin EP Impurity B); 7-[(2-Aminoethyl)amino]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid; Norfloxacin Impurity II：Norfloxacin EP Impurity B 
