Used as a versatile linker in bioconjugation and chemical synthesis, particularly in the development of peptide and protein modifications. Its polyethylene glycol (PEG) spacer enhances solubility and reduces immunogenicity, making it valuable in drug delivery systems. It is also employed in the creation of crosslinkers for attaching molecules to surfaces or other biomolecules, aiding in the study of molecular interactions. Additionally, it finds use in the preparation of functionalized nanoparticles and biomaterials for therapeutic and diagnostic applications.