Used in peptide synthesis as a chiral building block for constructing complex organic molecules, particularly in the development of bioactive peptides and pharmaceuticals. The Fmoc protection group allows for solid-phase peptide synthesis under mild basic conditions, enabling sequential amino acid coupling. The octenyl side chain provides a site for further functionalization or conjugation, such as through olefin metathesis or hydroformylation, making it valuable in the design of peptide mimetics or labeled peptides. Its stereochemistry is critical for ensuring proper folding and biological activity in the target peptide structure.