Used as a linker in bioconjugation, enabling the attachment of biomolecules to various surfaces or other molecules. It is particularly valuable in modifying proteins, peptides, and antibodies for targeted drug delivery systems. The aminooxy group allows for specific conjugation with aldehydes or ketones, making it useful in creating stable oxime bonds. This chemical is also employed in the development of diagnostic assays and imaging agents, where precise molecular labeling is required. Its PEG (polyethylene glycol) component enhances solubility and reduces immunogenicity, improving the performance of therapeutic and diagnostic constructs.