Azido-PEG-methylamine is a functionalized compound that has gained significant attention in pharmaceutical research and development. The introduction of azido-PEG-methylamine is a classification of compounds that possess both azido and PEG functional groups. The azido group is a potent bioorthogonal functional group that allows for selective labeling of biomolecules, while PEGylation enhances the solubility and stability of drugs. This compound has shown promising results in drug delivery systems, where it can improve drug bioavailability, enhance therapeutic efficacy, and reduce toxicity. Furthermore, azido-PEG-methylamine has been used in the development of targeted drug delivery systems, where it can selectively deliver drugs to diseased cells while sparing healthy cells.