英文别名1-Ethyl-6-fluoro-7-(4-formylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid; Norfloxacin EP Impurity G; Norfloxacin Impurity 7; Norfloxacin EP Imp G; 1-ethyl-6-fluoro-7-(4-formylpiperazin-1-yl)-1,4-dihydro-4-oxoquinoline-3-carboxylic acid; 3-Quinolinecarboxylic acid, 1-ethyl-6-fluoro-7-(4-formyl-1-piperazinyl)-1,4-dihydro-4-oxo- 
