Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of central nervous system agents and antipsychotic drugs. It serves as a building block in organic synthesis due to its rigid heterocyclic structure, which is valuable in constructing bioactive molecules. Its chlorinated quinoline core allows for further functionalization, making it useful in medicinal chemistry for structure-activity relationship studies. Also employed in research settings to develop novel compounds with potential neurological and psychiatric applications.