Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of peptide-based drugs. Its Boc-protected amine group and free carboxylic acid enable selective coupling reactions, making it valuable in solid-phase peptide synthesis. The terminal alkene group allows further modification via reactions such as olefin metathesis or hydroboration, facilitating the introduction of structural diversity in drug candidates. Commonly employed in the preparation of enzyme inhibitors and bioactive molecules where stereochemistry is critical for activity.