Used as a key intermediate in the synthesis of fluoroquinolone antibiotics, particularly in the production of third- and fourth-generation quinolones. Its structure allows for further functionalization at the 6-position, enabling the development of antimicrobial agents with enhanced activity against Gram-negative and Gram-positive bacteria. It plays a critical role in constructing the core quinolone scaffold during pharmaceutical manufacturing. Also utilized in research for developing new antibacterial compounds with improved pharmacokinetic and resistance profiles.