Azido-PEG4-tetra-Ac-beta-D-glucose is widely used in bioconjugation and click chemistry applications. Its azide group enables efficient and selective reactions with alkynes, making it valuable for labeling biomolecules such as proteins, peptides, and nucleic acids. The PEG4 linker enhances solubility and reduces steric hindrance, improving reaction efficiency. This compound is particularly useful in the development of glycoconjugates for studying carbohydrate-protein interactions, drug delivery systems, and diagnostic probes. It also serves as a key intermediate in synthesizing complex glycostructures for research in glycobiology and immunotherapy.