Z-LYS(Z)-OSU is widely used in peptide synthesis as a protective group for lysine residues. It helps in preventing unwanted side reactions during the formation of peptide bonds, ensuring the selective modification of specific amino acids. This compound is particularly valuable in the production of complex peptides and proteins, where precise control over the sequence and structure is critical. Additionally, it finds applications in bioconjugation techniques, where it facilitates the attachment of peptides to other molecules, such as drugs, dyes, or polymers, for targeted delivery or diagnostic purposes. Its stability and reactivity make it a preferred choice in both academic research and industrial settings for developing biologically active compounds.