Used in bioconjugation and click chemistry applications, this compound serves as a versatile linker for attaching biomolecules, such as proteins, peptides, or antibodies, to other entities like nanoparticles, surfaces, or fluorescent dyes. The azide group enables efficient and selective reactions with alkyne-functionalized molecules via copper-catalyzed azide-alkyne cycloaddition (CuAAC), while the PEG (polyethylene glycol) spacers enhance solubility, reduce steric hindrance, and improve biocompatibility. It is particularly valuable in drug delivery systems, diagnostic tools, and the development of biophysical probes, where precise and stable conjugation is essential. Its dual functionality and PEGylated structure make it suitable for applications in both aqueous and organic environments.