4arm-PEG-Maleimide, MW 10,000 is a thiol reactive multiarm PEG polymer. Maleimides react with thiols or sulfhydryl-containing molecules at pH 6.5 to 7.5 via formation of stable thioether bond. The hydrophilic PEG chain increases the water solubility of the compound in aqueous media. Reagent grade, for research purpose.
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