N-Boc-DL-Methionine is widely used in peptide synthesis as a protecting group for the amino acid methionine. The Boc (tert-butoxycarbonyl) group safeguards the amine functionality during the synthesis process, preventing unwanted side reactions. This compound is particularly valuable in solid-phase peptide synthesis (SPPS), where it ensures the selective deprotection and coupling of amino acids. Additionally, it is employed in the preparation of modified peptides and proteins for research in biochemistry and pharmaceutical development. Its stability under various reaction conditions makes it a reliable choice for constructing complex peptide structures.