Mal-PEG-SCM (MW 3400) is a linear heterobifunctional PEG compound with maleimide and NHS ester groups. It is an essential PEG chain-containing crosslinker. Maleimide reacts with thiols (SH groups), while SCM (succinimidyl carboxymethyl ester) can react with primary amines. The maleimide group contains a reactive C=C double bond and is sensitive to light and oxygen.
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