4-Arm-PEG-Azide (MW 2000) [4-Arm-PEG-N3 (MW 2000)] is a PEG derivative made up of PEG units and azide groups. This compound features azide groups that can engage in copper-catalyzed azide-alkyne cycloaddition reactions (CuAAC) with molecules containing alkyne groups. Additionally, it can participate in strain-promoted azide-alkyne cycloaddition reactions (SPAAC) with molecules that have DBCO or BCN groups.
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