Used as a key chiral intermediate in the synthesis of biologically active compounds, particularly pharmaceuticals targeting central nervous system disorders and protease inhibitors. Its structure supports the development of peptide mimetics due to the presence of a functionalized phenyl ring and protected amino group, enabling selective coupling reactions. Commonly employed in medicinal chemistry for structure-activity relationship studies, especially in optimizing drug candidates requiring high enantiomeric purity. The methylsulfonyl group enhances binding affinity to certain enzyme active sites, making it valuable in designing inhibitors with improved potency and selectivity.