Branched biotin PEG linkers have emerged as a versatile class of compounds that find wide applications in drug research and development. These linkers consist of a branched polyethylene glycol (PEG) chain with a biotin moiety attached at one end and a functional group at the other end. The functional group can be customized according to the specific needs of the drug molecule being developed. The unique properties of branched biotin PEG linkers make them ideal for various drug delivery applications, including targeted drug delivery and controlled release.