Used as a key intermediate in organic synthesis, particularly in the preparation of heterocyclic compounds and pharmaceuticals. Its structure allows for facile functionalization at multiple sites, making it valuable in constructing complex molecules. Commonly employed in condensation reactions to form β-keto esters and in the synthesis of gamma-butyrolactone derivatives. Also utilized in the development of agrochemicals and active pharmaceutical ingredients (APIs) due to its reactivity and ability to introduce bromine and ester functionalities into target molecules.