Acid-PEG4-Amide-Tri(3-methoxypropanamide-PEG4-Azide) Methane represents a branched PEG linker containing a carboxylic acid group which can react with amine-bearing entities in presence of activators like HATU and three terminal azide groups which may participate in copper-catalyzed click chemistry with alkyne, BCN, DBCO. Hydrophilicity is improved via the PEG chains.
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