Used as a chiral building block in the synthesis of pharmaceutical compounds, particularly in the development of protease inhibitors and other biologically active molecules. Its structure contains both a protected amine and a carboxylic acid group, making it suitable for peptide coupling reactions. The thiophene ring provides a heteroaromatic moiety that can enhance binding affinity in drug candidates. Commonly employed in medicinal chemistry for the preparation of enzyme inhibitors and in the construction of peptidomimetics.