Boc-Met(O2)-OH is widely used in peptide synthesis as a protected form of methionine sulfoxide. It serves as a key intermediate in the production of complex peptides, ensuring the methionine residue remains stable and protected during the synthesis process. This compound is particularly valuable in pharmaceutical research, where it aids in the development of peptide-based drugs by preventing unwanted oxidation reactions. Additionally, it is employed in biochemical studies to investigate the role of methionine sulfoxide in protein function and oxidative stress. Its protective group can be easily removed under specific conditions, allowing for precise control in peptide chain assembly.