Used as a key intermediate in the synthesis of selenocysteine-containing peptides, this compound enables the study of selenoproteins and their biological functions. Its selenium moiety allows for enhanced redox activity, making it valuable in biochemical research involving antioxidant enzymes like glutathione peroxidase. The Boc-protected amine group ensures selective peptide coupling, facilitating solid-phase peptide synthesis. It is also employed in the development of enzyme mimics and redox-responsive biomaterials.