Synonyms: 100986-89-8; Levofloxacin Q-Acid; Levofloxacin related compound B; (-)-9,10-difluoro-3(S)-methyl-7-oxo-2,3-dihydro-7H- pyrido (1,2,3-de)-1,4-benzoxazine-6-carboxylic acid; 7H-Pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid, 9,10-difluoro-2,3-dihydro-3-methyl-7-oxo-, (3S)-; AK-56895; Levofloxacin related compound B [USP]; Levofloxacin related compound B RS [USP]; AC1LELV0; SCHEMBL2333806; CTK0H4797; ZINC57096; Levofloxacin carboxylic acid; DTXSID60143604; 8,9-Difluoro-3-methyl-6-oxo-2,3-dihydro-6H-1-oxa-3a-aza-phenalene-5-carboxylic acid; NVKWWNNJFKZNJO-YFKPBYRVSA-N; 7H-Pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylicacid, 9,10-difluoro-2,3-dihydro-3-methyl-7-oxo-, (3S)-; 9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-(3S)-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid; KS-00000H1D; ANW-58925; AKOS016002127; AC-7592; ACN-038327; (S)-9,10-Difluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid; FS-4544; (S)-(-)-9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido(1,2,3-de)(1,4)benzoxazine-6-carboxylic acid; AJ-09575; BC209423; SC-15832; AB0088529; AX8150630; FT-0642442; L0238; 86D898; UNII-08GT8FY84E; Levofloxacin Carboxylic Acid (Levofloxacin Difluoro Impurity); UNII-501W86694Z component NVKWWNNJFKZNJO-YFKPBYRVSA-N; 8,9-difluoro-3-methyl-6-oxo-2,3-dihydro-6H-1-oxa-3a-azaphenalene-5-carboxylic acid; Levofloxacin Related Compound B, United States Pharmacopeia (USP) Reference Standard; (-) -9,10-difluoro-3(S)-methyl-7-oxo-2,3-dihydro-7H -pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid; (-) -9,10-difluoro-3(S)-methyl-7-oxo-2,3-dihydro-7H-pyrido [1,2,3-de]-1,4-benzoxazine-6-carboxylic acid; (-)-9,10-difluoro-3(S)-methyl-7-oxo-2,3-dihydro-7H-pyrido [1,2,3-de]-1,4-benzoxazine-6-carboxylic acid; (-)-9,10-difluoro-3(S)-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid; (3S)-9,10-difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid; (3S)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid; 08GT8FY84E; (S)-(-) 9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de][1,4] benzoxazine-6-carboxylic acid; (S)-(-)-9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid; (S)-(-)-9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid 97%; (S)-(-)-9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid, 97%; (S)-(-)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido [1,2,3-de] [1,4]benzoxazine-6-carboxylic acid; (S)-(-)-9,10-difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido [1,2,3-de][1,4]benzoxazine-6-carboxylic acid; (S)-(-)-9,10-Difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid; (S)-9,10-Difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid; Levofloxacin Impurity A; IFLab1_001868; Levofloxacin acid; CID688333; MFCD04039905; Levofloxacin Q-acid, 98% - 1G 1g; (S)-(-)-9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido-[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid; S-(-)-9,10-DIFLUORO-2,3-DIHYDRO-3-METHYL-7-OXO-7H-PYRIDO-[1,2,3-DE][1,4]-BENZOXAZINE-6-CARBOXYLICACID; (3S)-9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid; 7H-Pyrido(1,2,3-de)-1,4-benzoxazine-6-carboxylic acid, 9,10-difluoro-2,3-dihydro-3-methyl-7-oxo-, (3S)-; Levofloxacin q-acid, (-)-;