3-Quinolinecarboxylic acid, 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)- 68077-27-0 (HCL) 70458-96-7 AIDS-001991 AIDS001991 Chibroxin MK-366 Norfloxacin Norfloxacine Noroxin