Used in bioconjugation processes, particularly in click chemistry reactions, where the azide group reacts selectively with alkynes to form stable triazole linkages. This enables labeling and detection of biomolecules in biological systems. Commonly employed in the development of probes for imaging, drug delivery systems, and surface functionalization of nanoparticles and polymers. Also utilized in the synthesis of peptide mimetics and as a linker in solid-phase synthesis due to its bifunctional nature.