(-)-7-((2S,3R)-3-Amino-2-methyl-1-azetidinyl)-1-(2,4-difluorophenyl)-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid 141725-88-4 3-Quinolinecarboxylic acid, 7-(3-amino-2-methyl-1-azetidinyl)-1-(2,4-difluorophenyl)-6-fluoro-1,4-dihydro-4-oxo-, (2S-trans)- Cetefloxacin Cetefloxacin [INN] E 4868