MPEG2 Maleimide


PEG products with different MW and functional groups may be made to order, please contact us for details


MPEG2 Maleimide with superior quality specification of ≥95% Substitution.

MPEG2 Maleimide reacts with thiol groups on cystein side chains, such as those present on the active ingredient of certolizumab [1]. JenKem Technology offers MPEG2 Maleimide with MW 40000, in 1g and 10g packing sizes. Different MW of MPEG2 Maleimide products may be available by custom synthesis, please email us at for details on made-to-order PEGs. JenKem Technology provides repackaging services for an additional fee, please contact us if you require a different package size than our catalog selection.

Bulk PEGs and GMP grade PEGs are made-to-order. Please contact us for bulk pricing.



Founded in 2001 by experts in PEG synthesis and PEGylation, JenKem Technology specializes exclusively in the development and manufacturing of high quality polyethylene glycol (PEG) products and derivatives, and related custom synthesis and PEGylation services. JenKem Technology is ISO 9001 and ISO 13485 certified, and adheres to ICH Q7A guidelines for GMP manufacture. The production of JenKem® PEGs is back-integrated to in-house polymerization directly from ethylene oxide, enabling facile traceability for regulated customers. JenKem Technology caters to the PEGylation needs of the pharmaceutical, biotechnology, medical device and diagnostics, and emerging chemical specialty markets, from laboratory scale through large commercial scale.

Synonyms: MPEG2 Lysine Maleimide; MPEG2-LYS-MAL; Previous names: MPEG2 LYS Maleimide, MW 40000; MPEG2-LYS-MAL-40K

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