Azido-PEG23-amine is widely used in bioconjugation and click chemistry applications due to its azide functional group, which reacts efficiently with alkynes in the presence of a copper catalyst. This compound is particularly valuable in the development of drug delivery systems, where it serves as a linker to attach therapeutic molecules to targeting agents, such as antibodies or peptides. Its polyethylene glycol (PEG) spacer enhances solubility and reduces immunogenicity, making it suitable for biomedical applications. Additionally, it is employed in the synthesis of hydrogels, surface modification of nanoparticles, and the creation of biomaterials for tissue engineering, where precise and stable chemical bonds are essential. Its versatility and biocompatibility make it a key component in advanced research and pharmaceutical development.