This compound is widely used in peptide synthesis as a protecting group for tyrosine residues. It helps in preventing unwanted reactions during the formation of peptide bonds, ensuring selective coupling. The tert-butoxycarbonyl (Boc) group provides stability under various reaction conditions, while the N-hydroxysuccinimide (OSu) ester facilitates efficient activation of the carboxyl group, making it highly reactive with amino groups. This makes it particularly useful in solid-phase peptide synthesis (SPPS) and other bioconjugation techniques. It is also employed in the preparation of modified peptides for research in drug development, biochemical studies, and the production of peptide-based therapeutics. Its application extends to the synthesis of complex biomolecules where precise control over amino acid incorporation is critical.