Maleimide(Mal) PEG

Maleimide PEG (PEG-Mal) is a sulfhydryl (thiol/SH) group reactive PEG derivative used to selectively modify protein, peptide or any other surfaces with available sulfhydryl groups. The reaction between maleimide and thiol proceeds readily at pH 6.5~7.5 to form stable thioether bonds.
We can provide a broad range of linear and multi-arm maleimide PEG linkers with various functional groups, such as mPEG-MalMal-PEG-NH2DSPE-PEG-MalFITC-PEG-Mal4-ArmPEG-Mal, etc. All of our PEG linkers are of high purity and can be provided in lab and GMP grades. Mail at for more details. 

Catalog No. Name Structure M.W. Purity