1,4-Dihydro-6,8-difluoro-1-ethyl-4-oxo-7-(1-piperazinyl)-3-quinolinecarboxylic acid 3-Quinolinecarboxylic acid, 1,4-dihydro-6,8-difluoro-1-ethyl-4-oxo-7-(1-piperazinyl)- 99726-76-8 BRN 4208703