| abstract |
The present invention relates to a 1-(6-amino-3,5-difluoropyridin-2-yl)-6-fluoro-7-(3-hydroxyazetidin-1-yl)-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylicnacid ornsalt thereof; and drugs containing the same as the activeningredient. Since this compound or salt thereof is highlynstable to light while sustaining the excellent propertiesninherent to quinolone antibacterial agents, annantibacterial agent comprising, as an active ingredient,nthe invention compound or salt thereof can be stored over anlong period of time without suffering from any decrease innthe drug effect and can therefore be supplied as stablenpreparations such as injections, eye drops and surgicalnmedicines. |