QUINOLINECARBOXYLIC ACID DERIVATIVE OR ITS SALT

摘要

1-(6-Amino-3,5-difluoropyridin-2-yl)-6-fluoro-7-(3-hydroxyazetidin-1-y l)-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid or its salt, and drugs containing the same as the active ingredient. Since this compound and its salt are highly stable to light while sustaining the excellent properties inherent to quinolone antibiotics, antibacterial agents containing the same can be stored over a long period of time without suffering from any decrease in the drug effect. Thus, these drugs can be supplied as stable preparations such as injections, eye drops and surgical medicines.