1,8-Naphthyridine-3-carboxylic acid,1-(1,1-dimethylethyl)-6-fluoro-1,4-dihydro-7-(3-methyl-1-piperazinyl)-4-oxo- 1-tert-Butyl-6-fluoro-7-(-3-methyl-piperazin-1-yl)-4-oxo-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid 116162-95-9 AIDS-022416 AIDS022416 PD 163048 Quinolone der.