1-tert-Butyl-6-fluoro-4-oxo-7-piperazin-1-yl-1,4-dihydro-quinoline-3-carboxylic acid 116162-74-4 3-Quinolinecarboxylic acid, 1-(1,1-dimethylethyl)-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)- AIDS-044907 AIDS044907 PD 135346 Quinolone der.