This chemical is widely 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 formation of peptide bonds. The Boc (tert-butyloxycarbonyl) group protects the alpha-amino group, while the Z (benzyloxycarbonyl) group protects the side chain of lysine. After the peptide chain is assembled, these protecting groups can be selectively removed under mild conditions, allowing for further modifications or purification of the peptide. Its application is crucial in the production of complex peptides and proteins for research, pharmaceuticals, and biotechnology.