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Levofloxacin-6 Levofloacin Impurity 4 Levofloxacin Impurity F Levofloxacin Impurity 3 Decarboxyl Levofloxacin Levofloacin Impurity 28 Levofloxacin impurity 28 Descarboxyl Levofloxacin Levofloxacin EP Impurity E Levofloxacin BP Impurity E (S)-Ofloxacin EP Impurity B Descarboxyl Levofloxacin HCl Levofloxacin Descarboxy IMpurity Descarboxyl Levofloxacin IMpurity Decarboxylated levofloxacin hydrochloride Levofloxacin Impurity E(Descarboxyl Levofloxacin) (S)-Ofloxacin EP Impurity B (Decarboxyl Levofloxacin) Levofloxacin?EP Impurity E (Levofloxacin Descarboxy Impurity) (S)-9-Fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-2H-[1,4]oxazino[2,3,4-ij]quinolin-7(3H)-one (S)-9-fluoro-3-methyl-10- (4-methylpiperazin-1-yl)-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinolin-7-one (3S)-9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazin-7-one 7H-Pyrido[1,2,3-de]-1,4-benzoxazin-7-one, 9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-, (3S)- (-)-(S)-9-Fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine (S)-9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinolin-7-one hydrochloride (S)-9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinolin-7-one(Decarboxyl Levofloxacin) Levofloxacin impurity 10/Descarboxyl Levofloxacin/(S)-Ofloxacin EP Impurity B/(S)-9-fluoro-3-methyl-10- (4-methylpiperazin-1-yl)-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinolin-7-one