4-arm Poly(ethylene glycol) aldehyde (4-Arm PEG-CHO) from Advanced BioChemicals (ABC) are high quality multi-arm PEG derivatives with aldehyde at each terminal of the four arms that reacts with amine and N-terminal peptide and protein to form an imine containing a C=N double bond which can be further reduced to a more stable C-N bond.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-CHO 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-CHO products may be available by custom synthesis, please email us at tech@advancedbiochemicals.com for details. Advanced BioChemicals (ABC) also provide repackaging services, please contact us at sales@advancedbiochemicals.com for a free quote.