Carboxy-Amido-PEG4-Amine is a PEG reagent containing an amino (NH2) and a terminal carboxylic acid group. The hydrophilic PEG unit increases hydrophilicity. NH2 amine group is reactive with carboxylic acids in the presence of coupling reagent such as EDC, or directly with NHS esters, to form a stable amide bond. Reagent grade, for research purpose.
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