Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of antimalarial and anticancer agents. Its structure allows for functionalization at multiple sites, making it valuable in medicinal chemistry for building complex heterocyclic systems. Also employed in the preparation of fluorescent probes due to the inherent photophysical properties of the quinoline core, useful in bioimaging and sensor technologies. Additionally, it serves as a ligand or building block in coordination chemistry and catalysis.