4ARM PEG Raw Materials (pentaerythritol core)


PEG products with additional MW may be made to order, please contact us for details


4ARM PEG Raw Materials from JenKem Technology are high quality PEGs with very low polydispersity prepared by ethoxylation of pentaerythritol, suitable for further derivatization into PEG derivatives and for hydrogel formation. The reported molecular weight of 4ARM-PEG-OH is the sum of the PEG molecular weights of each arm. The number of ethylene oxide units in the PEG chain may not be equal for all arms.

JenKem Technology also provides a 4ARM PEG GPC Calibration Standards kit (STD4ARMPEG) that includes 200mg each of 4ARM-PEG-2000, 4ARM-PEG-5000, 4ARM-PEG-10K, 4ARM-PEG-20K, and 4ARM-PEG-40K.

Multi-arm PEG raw products with molecular weights and branching not listed in our online catalog may be available by custom synthesis. Please inquire at tech@jenkemusa.com about pricing and availability.

Click here to download the MSDS

4ARM-PEG-OH 2kDa, 5kDa, 15kDa, 10kDa, 20kDa ≥ 95% ≤ 1.05



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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 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.

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