Used in the synthesis of quinoline-based pharmaceuticals, particularly in the development of antimalarial and anticancer agents. Its structure serves as a key intermediate in constructing complex heterocyclic compounds with biological activity. The presence of reactive sites—hydroxyl, chloro, and methoxy groups—allows for selective functionalization, enabling the creation of derivatives for structure-activity relationship studies. Commonly employed in medicinal chemistry research to optimize drug candidates targeting kinase inhibition and microbial pathogens.