Used in peptide synthesis as a protected form of methionine, ensuring selective reactivity during the formation of peptide bonds. It helps in preventing unwanted side reactions and allows for controlled assembly of amino acids in the synthesis of complex peptides and proteins. Commonly employed in pharmaceutical research and development for creating peptide-based drugs. Also utilized in biochemical studies to investigate protein structure and function. Its stability and ease of deprotection make it a valuable reagent in organic and medicinal chemistry.