This compound is widely used in bioconjugation and click chemistry applications due to its azide functional group. It serves as a linker or spacer molecule, enabling the attachment of biomolecules, such as proteins, peptides, or nucleic acids, to other functional groups or surfaces. Its polyether chain provides hydrophilicity and flexibility, making it suitable for use in aqueous environments and reducing steric hindrance during reactions. It is particularly valuable in the development of drug delivery systems, diagnostic probes, and biomaterial modifications. Additionally, its azide group allows for efficient and selective reactions with alkynes via copper-catalyzed azide-alkyne cycloaddition (CuAAC), a cornerstone of bioorthogonal chemistry.