Synonyms: Tosufloxacin (unspecified);A 61827;A 67107;Abbott 61827;BRN 4913117;CCRIS 6304;1,8-Naphthyridine-3-carboxylic acid, 1,4-dihydro-7-(3-amino-1-pyrrolidinyl)-1-(2,4-difluorophenyl)-6-fluoro-4-oxo-;7-(3-aminopyrrolidin-1-yl)-1-(2,4-difluorophenyl)-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid;7-(3-aminopyrrolidin-1-yl)-1-(2,4-difluorophenyl)-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid 4-methylbenzenesulfonate (1:1)