N-(amine-PEG8)-N-bis(PEG8-azide) serves as a branched linker with two terminal azides for click reactions with BCN, DBCO, alkynes, and an amine group which is reactive with activated NHS esters, carboxylic acids, carbonyls (ketone, aldehyde), etc. The PEG8 chain increases the aqueous solubility of the molecule.
Usually ships within 24 hours.