Used primarily as a key intermediate in the synthesis of pharmaceuticals and agrochemicals. It serves in the preparation of indole-based compounds that exhibit biological activity, including kinase inhibitors and antitumor agents. Its nitrile and chlorine functional groups allow for further chemical modifications, making it valuable in medicinal chemistry for building complex heterocyclic systems. Commonly employed in research settings for developing new bioactive molecules and in the design of serotonin receptor modulators.