Used in peptide synthesis as a chiral building block for the preparation of structurally modified peptides with potential biological activity. The presence of the vinylphenyl group allows for further functionalization via cross-coupling reactions or polymerization, making it useful in the development of peptide-based materials or probes. Its Fmoc protection group enables solid-phase synthesis, facilitating stepwise assembly of peptides under mild conditions. Commonly employed in medicinal chemistry for designing enzyme inhibitors or receptor ligands where stereochemistry plays a critical role in activity.