for the following products
1-Ethyl-6,8-difluoro-7-(3-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid hydrochloride | 2-Ethyl-6,8-difluoro-2,4-dihydro-(3-methyl-1-piperazinyl)-4-oxo-3-quinolinecarboxylic acid and Lomefloxacin hydrochloride
