This compound is widely used in bioconjugation and click chemistry applications due to its DBCO (dibenzocyclooctyne) group, which reacts efficiently with azides without the need for a catalyst. The PEG9 (polyethylene glycol) spacer provides flexibility and solubility, making it ideal for modifying biomolecules like proteins, peptides, and antibodies. It is particularly valuable in drug delivery systems, where it helps attach targeting ligands to therapeutic agents, enhancing their specificity and efficacy. Additionally, it is employed in the development of biosensors and diagnostic tools, enabling precise labeling and detection of biological molecules. Its amine group allows further functionalization, expanding its utility in creating complex molecular constructs for research and therapeutic purposes.