This image represents a bromoacetamido-dPEG®n-DBCO product group. The bromoacetyl group is connected via an amide bond to a dPEG®-acid moiety with 4, 12, or 24 ethylene oxide units in the chain. The acid terminus of the dPEG® moiety is amide-bonded to a dibenzylcyclooctyne (DBCO) group that is used for copper-free click chemistry, known by the acronym SPAAC.
