α,ω-Dimercapto poly(ethylene glycol) (HS-PEG-SH) from Advanced BioChemicals (ABC) are high quality PEG crosslinking reagents with two reactive free thiol groups at both end sites, which can selectively reacts with maleimide and transition metal nanoparticle surface including gold, silver, etc. HS-PEG-SH can be easily air oxidized to form a dimer via a S-S disulfide bond, which can be reversed with reducing agents.
Advanced BioChemicals (ABC) offer HS-PEG-SH with MW 2kDa, 3.5 kDa, 5kDa, 10kDa, 20kDa and 40kDa, in 1g, 5g and 10g packing sizes. Different MW of HS-PEG-SH products may be available by custom synthesis, please contact us at sales@advancedbiochemicals.com for a free quote.