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Norfloxacin EP Impurity B OFLOXACIN DESFLUORO IMPURITY Desethylene Norfloxacin Hydrochloride Norfloxacin EP Impurity B(Hydrochloride) Norfloxacin Impurity II：Norfloxacin EP Impurity B Norfloxacin Impurity 2(Norfloxacin EP Impurity B) 3-Quinolinecarboxylic acid, 7-[(2-aminoethyl)amino]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo- 7-[(2-Aminoethyl)amino]-1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid HCl 7-[(2-Aminoethyl)amino]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid</html> Norfloxacin EP Impurity B (Norfloxacin Desethylene Impurity/ Norfloxacin Ethylenediamine Analog) NORFLOXACIN EP IMPURITY B NORFLOXACIN ETHYLENEDIAMINE ANALOG 7-[(2-AMINOETHYL)AMINO]-1-ETHYL-6-FLUORO-4-OXO-1,4-DIHYDROQUINOLINE-3-CARBOXYLIC ACID HCL