Used as a key intermediate in the synthesis of quinoline-based pharmaceuticals, particularly antimalarial drugs. Its structure allows for selective functionalization at multiple positions, making it valuable in medicinal chemistry for developing bioactive molecules. Commonly employed in research settings to construct fused heterocyclic systems with potential antimicrobial and anticancer activity. Also utilized in the preparation of dyes and fluorescent agents due to the inherent photophysical properties of the quinoline core.