4-arm Poly(ethylene glycol) maleimide (4-Arm PEG-MAL) from Advanced BioChemicals (ABC) are high quality multi-arm PEG derivatives with maleimide groups at each terminal of the four arms that can selectively react with thiol groups at pH 5.0-6.5. The total molecular weight of 4-Arm PEGs is the sum of the molecular weights of all four arms.
Advanced BioChemicals (ABC) offer 4-Arm PEG-MAL with MW 2kDa, MW 5kDa, MW 10kDa, MW 20kDa and MW 40kDa, in 1g, 5g and 10g packing sizes. Different MW of 4-Arm PEG-MAL products may be available by custom synthesis, please email us at firstname.lastname@example.org for details. Advanced BioChemicals (ABC) also provide repackaging services, please contact us at email@example.com for a free quote.