N-Boc-D-Methionine is widely used in peptide synthesis as a protecting group for the amino acid methionine. The Boc (tert-butoxycarbonyl) group safeguards the amino functionality during the synthesis process, preventing unwanted reactions. This compound is particularly valuable in the production of complex peptides and proteins, where selective protection and deprotection of amino acids are crucial. It is also employed in the development of pharmaceuticals, especially in the synthesis of peptide-based drugs, where precise control over molecular structure is essential. Additionally, N-Boc-D-Methionine is utilized in research settings for studying peptide interactions, modifications, and enzymatic processes, contributing to advancements in biochemistry and medicinal chemistry.