Polydispersed Maleimide(Mal) PEGs

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Maleimide(Mal) PEG

Maleimide PEG (MAL PEG) is a polyethylene glycol derivative with a reactive maleimide group that selectively conjugates with thiol-containing molecules such as cysteine residues in proteins or thiol-modified ligands. This stable covalent linkage makes MAL PEG ideal for site-specific bioconjugation, protein labeling, and nanoparticle surface modification.

With excellent hydrophilicity and biocompatibility, Maleimide PEG is widely used in drug delivery systems, antibody–drug conjugates (ADCs), biosensors, and medical device coatings to enhance solubility, stability, and bioavailability.

We provide MAL PEGs from gram to 100 kg GMP-grade supply with high purity, lot-to-lot consistency, and complete analytical support—meeting the needs of both R&D and large-scale production.
Find More Monodispersed Maleimide PEGs, Multi-Arm Maleimide PEGs on our catalog.

Catalog No.	Name	Structure	M.W.	Purity	Buy
MF001022	mPEG-Mal			≥95%

LP096022	DSPE-PEG-Mal			≥95%

LP099022	DLPE-PEG-Mal			≥95%

LP097022	DMPE-PEG-Mal			≥95%

LP100022	DOPE-PEG-Mal			≥95%

LP098022	DPPE-PEG-Mal			≥95%

HE022002	Mal-PEG-OH			≥95%

HE022050	Mal-PEG-NH2.HCl			≥95%

HO022022	Mal-PEG-Mal			≥95%

HE022005	Mal-PEG-NH2			≥95%

HE022123	Mal-NH-PEG-NH2.TFA			≥95%

HE022061	Mal-NH-PEG-PCL(10K)			≥90%

HE022059	Mal-NH-PEG-PCL(2K)			≥90%

HE022060	Mal-PEG-PCL(3K)			≥90%

HE022063	MAL-PEG-PLA(2K)			≥90%

HE022265	Mal-PEG-PLA(8K)			≥90%

HE022184	Mal-NH-PEG-PLA(10K)			≥90%

HE022180	Mal-NH-PEG-PLGA(20K)			≥90%

HE022025	Mal-NH-PEG-SPA			≥95%

HE022203	Mal-PEG-CLA			≥95%

HE022017	Mal-PEG-COOH			≥95%

HE022019	Mal-PEG-HZ			≥95%

HE022213	Mal-PEG-MTA			≥95%

HE022210	Mal-PEG-Niacin			≥95%

HE022211	Mal-PEG-OLA			≥95%

HE022113	Mal-PEG-PFP			≥95%

HE022216	Mal-PEG-Progestrone			≥95%

HE022223	Mal-PEG-PS			≥95%

HE022023	Mal-PEG-SC			≥95%

HE022024	Mal-PEG-SCM			≥90%

HE022027	Mal-PEG-SG			≥95%

HE022028	Mal-PEG-SS			≥95%

HE022058	Mal-PEG-SVA			≥95%

HE022166	Mal-PEG-Tretinoin			≥95%

HE010022	ACA-PEG-NH-Mal			≥95%

HE194022	Acetylthio-PEG-Mal			≥95%

HE009022	AC-PEG-Mal			≥90%

HE007022	AlKyne-PEG-Mal			≥90%

HE041022	Biotin-PEG-Mal			≥95%

HE068022	Boc-NH-PEG-Mal			≥95%

HE056022	Br-PEG-Mal			≥95%

HE004022	CHO-PEG-Mal			≥90%

LP095022	CLS-PEG-Mal			≥95%

HE053022	COCl-PEG-NH-Mal			≥95%

FL077022	Cy3.5-PEG-Mal			≥90%

FL167022	Cy3-PEG-Mal			≥90%

FL078022	Cy5-PEG-Mal			≥90%

HE048022	DBCO-PEG-Mal			≥90%

FL044022	FITC-PEG-Mal			≥90%

HE069022	Fmoc-NH-PEG-Mal			≥95%

HE051022	DF-PEG-Mal			≥95%

HE222022	Diethoxylsilane-PEG-Mal			≥95%

HE022208	Estrogen-PEG-Mal			≥95%

HE057022	FA-PEG-Mal

HE297022	Glucose-PEG-NH-MAL			≥90%

HE018022	IA-PEG-Mal			≥95%

HE039022	LA-PEG-Mal			≥95%

HE011022	MA-PEG-Mal			≥95%

HE035022	OPSS-PEG-Mal			≥95%

LP226022	Palmitic acid-PEG-Mal			≥95%

HE062022	PCL(12K)-PEG-Mal			≥90%

HE116022	PCL(5K)-PEG-Mal			≥90%

HE087022	PLGA(10K)-PEG-Mal			≥90%

HE088022	PLGA(12K)-PEG-Mal			≥90%

HE089022	PLGA(15K)-PEG-Mal			≥90%

HE118022	PLGA(18K)-PEG-Mal			≥90%

HE086022	PLGA(50:50)(8K)-PEG-Mal			≥90%

HE085022	PLGA(5K)-PEG-Mal			≥90%

FL045022	RB-PEG-Mal			≥90%

HE020022	Silane-PEG-Mal			≥90%

LP101022	STA-PEG-Mal			≥95%

HE161022	Tocopherol-PEG-Mal			≥95%

HE090022	VD-PEG-Mal			≥95%

HE199022	LNA-PEG-Mal			≥95%

HE198022	LRA-PEG-Mal			≥95%

HE207022	MTX-PEG-Mal			≥95%

HE255022	N+Me3-PEG-NH-Mal			≥95%

HE185022	PLGA(30K)-PEG-NH-Mal			≥90%

HE262022	c(RGDyK)-PEG-NH-Mal			≥90%

HE317141	DMG-PEG-Mal			≥95%

HE336022	DSG-PEG-NH-Mal			≥95%

HE022368	Mal-NH-PEG-CH2CH2OtBu			≥90%