Used in bioconjugation and click chemistry applications, it serves as a linker molecule to attach biomolecules or polymers. The aminooxy group reacts with carbonyl compounds like ketones or aldehydes, while the azide group participates in copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions. This makes it valuable in drug delivery systems, surface modifications, and the development of biofunctional materials. Its PEG spacer enhances solubility and reduces steric hindrance during reactions.