Maleimide(Mal) PEG

Biopharma PEG offers Maleimide PEG (PEG-Mal), which 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
MF001022 mPEG-Mal mPEG-Mal ≥95%
HO022022 Mal-PEG-Mal Mal-PEG-Mal ≥95%
HE004022 CHO-PEG-Mal CHO-PEG-Mal ≥95%
HE006022 N3-PEG-Mal N3-PEG-Mal ≥95%
HE007022 AlKyne-PEG-Mal AlKyne-PEG-Mal ≥95%
HE009022 AC-PEG-Mal AC-PEG-Mal ≥95%
HE010022 ACA-PEG-NH-Mal ACA-PEG-NH-Mal ≥95%
HE011022 MA-PEG-Mal MA-PEG-Mal ≥95%
HE018022 IA-PEG-Mal IA-PEG-Mal ≥95%
HE020022 Silane-PEG-Mal Silane-PEG-Mal ≥95%
HE022002 Mal-PEG-OH Mal-PEG-OH ≥95%
HE022005 Mal-PEG-NH2 Mal-PEG-NH2 ≥95%