Amino-PEG-CH2CO2-t-butyl ester, MW 5,000 is a carboxylate t-butyl ester PEGylation reagent with terminal amine. The reagent is reactive with an NHS ester to form a stable amide bond. The t-butyl ester group can be hydrolyzed under acidic/basic condition. Reagent grade, for research purpose.
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