Used as a key intermediate in the synthesis of fluoroquinolone antibiotics, particularly in the production of advanced antimicrobial agents. Its structure allows for functionalization at multiple sites, enabling the development of compounds with enhanced activity against resistant bacterial strains. Commonly employed in pharmaceutical research to improve potency, pharmacokinetics, and spectrum of action in new quinolone-based drugs. Also utilized in structure-activity relationship (SAR) studies to optimize antibacterial efficacy and reduce side effects.