Used in peptide synthesis as a protecting group for glutamic acid, ensuring selective reactions during the formation of peptide bonds. It is particularly valuable in the production of complex peptides and proteins, where precise control over amino acid reactivity is essential. The tert-butoxycarbonyl (Boc) group provides stability under various reaction conditions, while the benzyl ester moiety can be selectively removed without affecting other functional groups. This compound is also employed in the development of pharmaceutical intermediates, enabling the synthesis of biologically active molecules with high purity and specificity. Its application extends to research in biochemistry and medicinal chemistry, where it aids in the study of peptide structure and function.