This chemical is primarily used in bioconjugation and click chemistry applications. Its structure, featuring azide groups and PEG spacers, makes it highly suitable for linking biomolecules, such as proteins, peptides, or antibodies, to other molecules or surfaces. The azide groups enable efficient and selective reactions with alkyne-functionalized compounds through copper-catalyzed azide-alkyne cycloaddition (CuAAC), a widely used click chemistry reaction. The PEG spacers provide flexibility and solubility, reducing steric hindrance and improving the stability of the resulting conjugates. This compound is particularly valuable in drug delivery systems, diagnostic assays, and the development of targeted therapeutics, where precise and stable molecular linkages are essential. Additionally, it is employed in materials science for surface modification and functionalization of nanoparticles or polymers.