(S)-1-(2,4-Difluorophenyl)-6-fluoro-1,4-dihydro-5-methyl-7-(3-methyl-1-piperazinyl)-4-oxo-3-quinolinecarboxylic acid 146981-12-6 3-Quinolinecarboxylic acid, 1,4-dihydro-1-(2,4-difluorophenyl)-6-fluoro-5-methyl-7-(3-methyl-1-piperazinyl)-4-oxo-, (S)- BRN 4279836