Used primarily in peptide synthesis as a protective group for lysine residues. It helps in preventing unwanted side reactions during the formation of peptide bonds. The carbobenzoxy group protects the epsilon-amino group of lysine, while the tosyl group protects the alpha-amino group, ensuring selective reactivity. This chemical is valuable in the production of complex peptides and proteins, particularly in research and pharmaceutical development. It also aids in the study of enzyme mechanisms and protein interactions by allowing controlled modifications of specific amino acids.