Mal-PEG-CH2CO2H, MW 3,400 is a linear PEG polymer for site-selective modification of cysteine residues or other thiol molecule in bioconjugation technology. The coupling between thiol and maleimide generates a stable thiosuccnimide product. The carboxyl is reactive with amine in the presence of activator, such as HATU or EDC. Reagent grade, for research purpose.
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