Used in peptide synthesis as an activated ester, enabling efficient coupling of L-valine to growing peptide chains without racemization. Its Boc protection group ensures selective deprotection under mild acidic conditions, making it ideal for stepwise solid-phase and solution-phase peptide assembly. Commonly employed in the preparation of pharmaceutical intermediates and bioactive peptides where high purity and stereochemical integrity are critical. Also utilized in organic synthesis for constructing complex molecules requiring controlled amide bond formation.