Used as a key intermediate in the synthesis of quinoline-based pharmaceuticals, particularly in the development of antimalarial and anticancer agents. Its structure allows for selective functionalization at multiple sites, making it valuable in medicinal chemistry for building complex heterocyclic systems. Commonly employed in cross-coupling reactions to introduce aryl or alkyl groups at the bromine position, enabling the creation of diverse compound libraries for biological screening. Also utilized in the preparation of fluorescent probes due to the inherent photophysical properties of the quinoline core, useful in bioimaging and sensor technologies.