This chemical is primarily used in the field of bioconjugation and click chemistry due to its azide functional group. It serves as a versatile linker or spacer molecule, enabling the attachment of biomolecules, polymers, or other functional groups in a controlled and efficient manner. Its polyethylene glycol (PEG) chain provides water solubility and biocompatibility, making it suitable for applications in drug delivery systems, surface modification, and the development of bioassays. Additionally, it is employed in the synthesis of advanced materials, such as hydrogels or nanoparticles, where precise molecular assembly is required. Its stability and reactivity under mild conditions make it a valuable tool in research and industrial applications.