Used in solid-phase peptide synthesis as a chiral building block for incorporating modified amino acid residues into peptides. The Fmoc group enables orthogonal protection, allowing selective deprotection under mild basic conditions while maintaining compatibility with other functional groups. The 7-octenyl side chain introduces a hydrophobic, alkene-containing moiety that can serve as a site for further functionalization via cross-metathesis or act as a structural mimic in peptidomimetic design. Commonly applied in the development of bioactive peptides, enzyme inhibitors, and probes for studying protein–ligand interactions. Its stereochemistry ensures proper folding and biological activity in target peptides.