Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) for central nervous system (CNS) drugs and antipsychotic medications. Its structure allows for selective functionalization, making it valuable in constructing complex heterocyclic compounds. Commonly employed in coupling reactions to introduce benzo[b]thiophene scaffolds into target molecules, enhancing metabolic stability and binding affinity. Also utilized in agrochemical research for designing novel pesticides with improved efficacy and selectivity.