α,ω-Dicarboxyl poly(ethylene glycol) (HOOC-PEG-COOH) from Advanced BioChemicals (ABC) are high quality PEG crosslinking reagents with two reactive carboxyl groups at both end sites, can selectively reacts with amino group in the peptide coupling reagent such at NHS, DDC and EDC at pH 7-8. HOOC-PEG-COOH is a good crosslinker for PEGylation of proteins and peptides, nanoparticle and surface modifications.
Advanced BioChemicals (ABC) offer HOOC-PEG-COOH with MW 2kDa, 3.5 kDa, 5kDa, 10kDa, 20kDa and 40kDa, in 1g, 5g and 10g packing sizes. Different MW of HOOC-PEG-COOH products may be available by custom synthesis, please contact us at sales@advancedbiochemicals.com for a free quote.