This compound is widely used in bioconjugation and chemical biology due to its azide functional group, which enables click chemistry reactions, particularly with alkynes. It is commonly applied in the modification of biomolecules, such as proteins, peptides, and antibodies, to introduce PEG spacers, enhancing solubility and stability. The PEG6 linker provides flexibility and distance between conjugated molecules, making it useful in drug delivery systems and targeted therapies. Additionally, it is employed in the development of bioprobes and imaging agents for studying biological processes at the molecular level.