Used primarily as an intermediate in the synthesis of pharmaceuticals, particularly in the development of antimalarial and antimicrobial agents. Its structure supports the creation of compounds with biological activity targeting parasitic and bacterial infections. Also employed in research settings to explore new quinoline-based drugs due to its reactive chlorine sites, which allow for further chemical modifications. Shows potential in materials science for developing fluorescent probes and organic semiconductors owing to its aromatic and electron-deficient framework.