High Purity Methoxy PEG Raw Materials

High purity methoxy polyethylene glycols (Purity > 99%) for GMP manufacture of activated PEG products.


JenKem Technology has improved control of in-house direct polymerization processes such that high purity (>99%) methoxy polyethylene glycol raw materials can now be produced without the need for further purification. The benefit of these improvements are passed along to our customers who need GMP grade methoxy PEG (mPEG) derivatives.

This  capability ensures optimum control of batch to batch reproducibility and consistency of specifications to best meet the demanding requirements for conjugation to your protein, peptide, oligonucleotide, and/or small molecule.

Please contact us at tech@jenkemusa.com to request a quotation for high quality GMP grade activated PEGs synthesized with High Purity Methoxy PEG Raw Materials!


JenKem Technology specializes in the development and manufacture of high-quality polyethylene glycol (PEG) derivatives, and related custom synthesis and PEGylation services. JenKem Technology is ISO 9001 and ISO 13485 certified and adheres to ICH Q7 guidelines for GMP manufacture. The production of JenKem® PEGs is back integrated to in-house polymerization from ethylene oxide to ensure batch to batch consistency. 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.


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