N-acetylnorfloxacin
1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)quinoline
7-(4-Benzoyl-piperazin-1-yl)-1-ethyl-6-fluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid
1-ethyl-1,4-dihydro-6-fluoro-7-[4-(p-nitrobenzyl)-1-piperazinyl]-4-oxoquinoline-3-carboxylic acid
Pefloxacin