This compound is widely used in peptide synthesis as a protecting group for tyrosine. The tert-butoxycarbonyl (Boc) group safeguards the amino functionality, while the benzyl ester protects the carboxyl group during the synthesis process. It is particularly valuable in solid-phase peptide synthesis (SPPS) where selective deprotection is required to build complex peptides step-by-step. The Boc group can be removed under acidic conditions without affecting the benzyl ester, allowing for precise control over the synthesis. This makes it a crucial reagent in the production of peptides for pharmaceutical research, drug development, and biochemical studies. Its stability and ease of removal under mild conditions make it a preferred choice for protecting tyrosine residues in peptide chains.