Used as a key intermediate in the synthesis of quinolone-based pharmaceuticals, particularly in the development of antibacterial and antiviral agents. Its structure allows for functionalization at multiple sites, making it valuable in medicinal chemistry for constructing fused heterocyclic systems. Commonly employed in ring-forming reactions and cross-coupling processes to generate bioactive molecules. Also utilized in research settings to design kinase inhibitors and other enzyme modulators due to its rigid planar framework and electron-deficient character.