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Maleimide PEG

Maleimide-(CH2)2CONH(CH2)3O-PEG-(CH2)3-NHCO-(CH2)2-Maleimide, Mw 10,000


Maleimide-(CH2)2CONH(CH2)3O-PEG-(CH2)3-NHCO-(CH2)2-Maleimide, Mw 20,000