This chemical is primarily used in the field of bioconjugation and peptide synthesis. It serves as a versatile linker molecule, enabling the attachment of peptides or other biomolecules to various surfaces or carriers. The Cbz (carboxybenzyl) group acts as a protective group for amines, which can be selectively removed during synthesis. The PEG (polyethylene glycol) spacer enhances solubility and reduces steric hindrance, making it useful in drug delivery systems. The carboxyl group at the end allows for further functionalization, such as coupling with amines or other reactive groups, facilitating the creation of complex molecular structures. Its applications are particularly valuable in developing targeted therapies, diagnostic tools, and biomaterials.