6,8-Difluoro-1-(2-fluoroethyl)-1,4-dihydro-7-(4-methyl-1- piperazinyl)-4-oxo-3-quinolinecarboxylic acid 79660-53-0 (HYDROCHLORIDE SALT) 79660-72-3 AIDS-007696 AIDS007696 Fleroxacin Megalone