mPEG-Alkyne is widely used in bioconjugation and click chemistry applications. Its alkyne group allows for efficient and selective reactions with azide-containing molecules, making it valuable in the development of drug delivery systems, bioconjugates, and functionalized biomaterials. It is particularly useful in labeling and modifying proteins, peptides, and other biomolecules for research, diagnostics, and therapeutic purposes. Additionally, mPEG-Alkyne is employed in surface modification to enhance biocompatibility and reduce nonspecific interactions in biomedical devices and nanoparticles. Its water-soluble PEG chain further improves solubility and stability in biological environments.