108138-27-8 3-Quinolinecarboxylic acid, 1-(2,4-difluorophenyl)-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)- A 57531 A 62251 AIDS-043532 AIDS043532 PD 137954 PD137954 Quinolone der. T 1814