Used as a chiral derivatizing agent in asymmetric synthesis, particularly for the enantioselective preparation of amino acid derivatives and peptide mimetics. Its activated ester groups enable efficient coupling with primary and secondary amines under mild conditions, making it valuable in pharmaceutical synthesis where stereochemical control is critical. Commonly employed in the development of protease inhibitors and other bioactive molecules requiring high enantiomeric purity. Also utilized in solid-phase peptide synthesis due to its stability and selective reactivity.