DMG-PEG 2000-Azide (14:0) represents a PEG lipid used for liposome preparation. DMG-PEG has become known for lipid nanoparticle (LNP) preparation for siRNA (small interfering RNA) delivery in the COVID-19 vaccine development. The azide moiety partakes in click chemistry with BCN, DBCO, and alkynes. The 2k polyPEG elevates the water solubility of the molecule.
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