This chemical is primarily used in peptide synthesis as a protecting group for lysine residues. It helps to prevent unwanted reactions at the amino group of lysine during the peptide chain assembly process. The Boc (tert-butyloxycarbonyl) group specifically protects the alpha-amino group, while the formyl (For) group protects the epsilon-amino side chain of lysine. This dual protection ensures selective reactivity and enhances the efficiency of peptide synthesis. It is particularly valuable in solid-phase peptide synthesis (SPPS) and other complex peptide assembly techniques, where precise control over amino acid reactivity is crucial. After the synthesis is complete, the Boc and For groups can be removed under specific conditions to yield the desired peptide product.