Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of central nervous system (CNS) agents. Its structure supports the construction of bioactive molecules with potential application in treating neurological disorders. The amine and chloro functional groups allow for further chemical modifications, enabling the creation of diverse compound libraries for drug discovery. Commonly employed in medicinal chemistry for building isoquinoline-based scaffolds, which are found in compounds exhibiting antipsychotic, antidepressant, or antiarrhythmic activities.