Amine-PEG-valeric Acid, MW 3,400 is a PEGylation reagent which contains a free amine and a terminal carboxylic acid. The amine group is reactive with activated NHS esters. PEG Acid can also be converted to a N-hydroxysuccinimide active ester which is widely used in bioconjugation. Reagent grade, for research purpose.
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