This compound is widely utilized in bioconjugation and click chemistry applications due to its reactive azide group and PEG spacer. The azide group enables efficient and selective reactions with alkynes via copper-catalyzed azide-alkyne cycloaddition (CuAAC), making it valuable for labeling biomolecules, such as proteins, peptides, and nucleic acids. The PEG3 linker enhances solubility and reduces steric hindrance, improving the efficiency of conjugation processes. Additionally, the amide bond provides stability, ensuring the integrity of the conjugate in biological environments. It is particularly useful in drug delivery systems, where it facilitates the attachment of targeting moieties to therapeutic agents, and in the development of diagnostic probes for imaging and detection. Its versatility also extends to material science, where it is employed to modify surfaces or create functionalized polymers.