Used as a key intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of bioactive molecules with antimicrobial and antitumor properties. Its aldehyde and bromo functional groups allow for versatile chemical modifications, making it valuable in constructing complex heterocyclic compounds. Commonly employed in cross-coupling reactions such as Suzuki or Heck reactions to expand molecular diversity. Also applied in the preparation of fluorescent probes and organic semiconductors due to its conjugated structure and electron-accepting characteristics.