Fluoroquinolone antibacterial agent. Derivative of norfloxacin (Prod. No. ALX-380-295) with dramatically improved water solubility. Instantly dissociates into norfloxacin and nicotinic acid in the body therefore acting as norfloxacin. Inhibits bacterial DNA replication by interfering with an ATP-induced structural transition of DNA complexed with DNA gyrase (topoisomerase). Effective against Gram-negative bacteria; less effective against Gram-positive bacteria.