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-Mal, Mal-PEG-NH2, DSPE-PEG-Mal, FITC-PEG-Mal, 4-ArmPEG-Mal, etc. All of our PEG linkers are of high purity and can be provided in lab and GMP grades. Mail at sales@biochempeg.com for more details. 

Catalog No.	Name	Structure	M.W.	Purity	Buy
MF001022	mPEG-Mal			≥95%	BUY
HO022022	Mal-PEG-Mal			≥95%	BUY
HE004022	CHO-PEG-Mal			≥95%	BUY
HE006022	N3-PEG-Mal			≥95%	BUY
HE007022	AlKyne-PEG-Mal			≥95%	BUY
HE009022	AC-PEG-Mal			≥95%	BUY
HE010022	ACA-PEG-NH-Mal			≥95%	BUY
HE011022	MA-PEG-Mal			≥95%	BUY
HE018022	IA-PEG-Mal			≥95%	BUY
HE020022	Silane-PEG-Mal			≥95%	BUY
HE022002	Mal-PEG-OH			≥95%	BUY
HE022005	Mal-PEG-NH2			≥95%	BUY