This compound is widely used in the field of organic synthesis, particularly as a reagent for introducing polyethylene glycol (PEG) chains into molecules. Its primary application is in the modification of biomolecules, such as proteins, peptides, and antibodies, to enhance their solubility, stability, and bioavailability. The PEGylation process, facilitated by this compound, is crucial in drug development, as it helps reduce immunogenicity and prolong the circulation time of therapeutic agents in the body. Additionally, it is employed in the preparation of PEGylated linkers for conjugation in targeted drug delivery systems, improving the efficacy and specificity of treatments. Its role in bioconjugation chemistry also extends to the development of diagnostic tools and imaging agents.