Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of bioactive molecules and heterocyclic compounds. Its aldehyde functional group allows for easy modification through condensation or reduction reactions, making it valuable in constructing complex organic frameworks. Commonly employed in the preparation of antitumor agents, antimicrobials, and kinase inhibitors due to the benzothiophene core’s prevalence in medicinal chemistry. Also utilized in agrochemical research for designing novel pesticides and herbicides. Its bromine substituent enables further functionalization via cross-coupling reactions such as Suzuki or Heck couplings, expanding its utility in drug discovery and materials science.