Used as a key intermediate in the synthesis of antimalarial drugs, particularly in the production of chloroquine and related derivatives. It serves as a building block in medicinal chemistry for developing compounds with biological activity against parasitic infections. Also employed in the research and development of novel heterocyclic compounds for potential use in anticancer and antimicrobial agents. Its reactive nitrile and chloro groups allow for further functionalization, making it valuable in organic synthesis and pharmaceutical applications.