1,8-Naphthyridine-3-carboxylic acid, 1-(2,4-difluorophenyl)-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)- 100490-19-5 A 57274 A 62917 AIDS-044930 AIDS044930 PD 161141 PD161141 Quinolone der. T 3136