Used primarily as an intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and fine chemicals. Its functional groups—bromine, aldehyde, and ester—allow for selective reactions, making it valuable in constructing complex molecules. Commonly employed in cross-coupling reactions such as Suzuki or Heck reactions, where the bromine moiety acts as a reactive site. The aldehyde group enables condensation reactions, useful in forming heterocyclic compounds. Also utilized in the synthesis of bioactive molecules, including potential drug candidates and agrochemicals, due to its versatility in building aromatic frameworks.