Used primarily as an intermediate in the synthesis of pharmaceuticals, particularly quinoline-based drugs including antimalarials. It serves as a building block in the production of various related compounds due to its reactive quinoline core and chlorine substituents that facilitate further chemical modifications. Also employed in the development of agrochemicals and dyes, where its aromatic structure contributes to stability and specific reactivity. Its derivatives show potential in antimicrobial and anticancer research, making it valuable in medicinal chemistry.