Used as an intermediate in organic synthesis, particularly in cross-coupling reactions such as Suzuki or Stille couplings, to construct complex aromatic compounds. Its dual halogen functionality allows selective sequential reactions, where the bromine or iodine can be selectively displaced depending on reaction conditions. Commonly employed in the preparation of pharmaceuticals, agrochemicals, and functional materials requiring substituted benzene derivatives. The ester group can also be modified through hydrolysis, reduction, or amidation to introduce additional functional diversity.