164662-52-6 3-Quinolinecarboxylic acid, 1-(2,4-difluoro-3-methylphenyl)-7-(3,5-dimethyl-1-piperazinyl)-6-fluoro-1,4-dihydro-4-oxo- AIDS-043547 AIDS043547 PD 161546 PD161546 Quinolone der.