Azido-PEG-phosphonic acid ethyl ester

Azido-PEG-phosphonic acid ethyl ester is a compound that contains multiple functional groups, including an azide group, a polyethylene glycol (PEG) chain, and a phosphonic acid ester group. The azide group allows for the attachment of other molecules through click chemistry, while the PEG chain can improve the solubility and pharmacokinetics of the molecule. The phosphonic acid ester group can be used for binding to hydroxyapatite, making it useful for bone-targeted drug delivery. Azido-PEG-phosphonic acid ethyl ester has been widely used in pharmaceutical research and development due to its versatility and ability to modify other molecules. Its applications include drug delivery, imaging agents, and biomaterials.