This chemical is primarily used in peptide synthesis as a protected form of serine. The Boc (tert-butyloxycarbonyl) group safeguards the amino group, while the Tos (tosyl) group protects the hydroxyl side chain of serine, and the OMe (methyl ester) group protects the carboxyl group. This protection allows for selective reactions during the stepwise construction of peptides, ensuring that the serine residue remains intact until the desired stage of synthesis. It is particularly useful in solid-phase peptide synthesis (SPPS) and other methods where precise control over amino acid reactivity is required. After the peptide chain is assembled, the protecting groups can be removed to yield the final peptide product.