Used primarily in the field of bioconjugation and drug delivery, it serves as a versatile linker for attaching various molecules, such as drugs or imaging agents, to proteins or peptides. Its polyethylene glycol (PEG) spacer enhances solubility and reduces immunogenicity, making it valuable in the development of therapeutic compounds. Additionally, it is employed in the synthesis of peptide-based materials, where the Boc protecting groups ensure selective reactivity during chemical reactions. Its application extends to the creation of hydrogels and other biomaterials, where controlled release and biocompatibility are essential.