Widely used in bioconjugation and click chemistry, this compound serves as a versatile linker for attaching biomolecules, such as proteins, peptides, or antibodies, to other functional groups or surfaces. Its PEG (polyethylene glycol) spacers enhance solubility and reduce steric hindrance, making it ideal for applications in drug delivery systems and targeted therapies. The azide groups enable efficient and selective reactions with alkyne-functionalized molecules via copper-catalyzed azide-alkyne cycloaddition (CuAAC), facilitating the creation of stable triazole linkages. This makes it valuable in the development of bioconjugates, diagnostic probes, and materials for biomedical research. Additionally, its water-soluble properties and biocompatibility are advantageous for in vivo applications, such as imaging and therapeutic agent delivery.