Used primarily as an 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 quinoline-based molecules. It is also employed in the preparation of dyes and fluorescent probes due to its electron-deficient aromatic system, which can enhance photophysical properties. Additionally, it serves as a building block in agrochemical research for designing novel pesticides with improved efficacy and selectivity.