6,8-Difluoro-1-(formylmethylamino)-1,4-dihydro-7-(4-methyl-1-piperazinyl)-4-oxo-

Ethyl 6,8-difluoro-1,4-dihydro-1-(N-methylformamido)-7-(4-methyl-1-piperazinyl)-4-oxo-3-quinolinecarboxylate

3-Quinolinecarboxylicacid,6,8-difluoro-1-(formylmethylamino)-1,4-dihydro-7-(4-methyl-1-piperazinyl)-4-oxo-,ethylester

6,8-Difluoro-1,4-dihydro-1-(N-MethylforMaMido)-7-(4-Methyl-1-piperazinyl)-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester

6,8-Difluoro-1-(formylmethylamino)-7-(4-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid ethyl ester

6,8-Difluoro-1-(formylmethylamino)-1,4-dihydro-7-(4-methyl-1-piperazinyl)-4-oxo-3-quinolinecarboxylic acid ethyl ester