Boc-Met-OSu is widely used in peptide synthesis as a protective agent for methionine residues. It helps in preventing unwanted side reactions during the formation of peptide bonds, ensuring the integrity of the methionine side chain. This compound is particularly valuable in solid-phase peptide synthesis (SPPS), where it facilitates the stepwise assembly of peptides. Additionally, Boc-Met-OSu is employed in the preparation of modified peptides and peptidomimetics, which are essential in drug discovery and development. Its stability and ease of removal under mild acidic conditions make it a preferred choice in various biochemical and pharmaceutical research applications.