Used as a key intermediate in the synthesis of pharmaceuticals and biologically active compounds. Its structure allows for selective functionalization in drug development, particularly in the preparation of serotonin receptor modulators and other central nervous system agents. The aldehyde group enables condensation reactions, while the bromine atom supports cross-coupling reactions like Suzuki or Heck couplings, making it valuable in building complex aromatic systems for medicinal chemistry. Also employed in the production of dyes and fluorescent probes due to its aromatic amine and aldehyde functionalities.