Product categories

PEG Products 

JenKem Technology manufactures high quality activated PEG polymers, PEG co-polymers, and monodisperse PEGs, from laboratory to commercial scale, in both GMP and non-GMP grade. Our reactive polyethylene glycol derivatives are utilized widely in the pharmaceutical, biotechnology, medical device and diagnostics, and emerging chemical specialty fields.

JenKem PEG Quality

Functionally, JenKem Technology’s PEG products include activated PEG derivatives for amine PEGylation, active PEG derivatives for N-terminal PEGylation, and active PEG derivatives for thiol PEGylation, and for carboxyl PEGylation.

Structurally, JenKem Technology’s PEG products include JenKem® proprietary Y-shape branched PEG derivatives; linear M-PEG derivatives with low diol content; homobifunctional PEG derivatives; heterobifunctional PEG derivatives; multi-arm homofunctional reactive PEGs for hydrogels; multi-arm heterofunctional PEG derivatives for ADC development; monodisperse / discrete PEGs; and biodegradable PEG copolymers with polyaminoacids, PLA, PLGA, PCL, and other polymers.

PEG raw materials, which are PEGs with inactive hydroxyl groups, are provided in bulk in non-GMP grade. JenKem Technology’s PEG raw materials are manufactured in-house, back-integrated to production directly from ethylene oxide. GPC calibration standards, necessary for accurate GPC analysis of PEG products, are provided as GPC calibration kits for linear methoxy PEGs and 4arm PEGs.

Visit the product list below and to the left, to learn about our extensive line of activated PEGs and PEG co-polymers and to place an online order directly with JenKem Technology. For global distributor information, please visit link.

Bulk, Custom, and GMP grade PEGs

JenKem Technology provides GMP grade PEG derivatives and bulk orders via custom synthesis, offering the opportunity to match customers’ special quality requirements. The company is capable of development and synthesis of a wide range of GMP PEG derivatives from 200g up to 40 kg or larger batches, under ISO 9001 and ISO 13485 certified quality management system, and following ICH Q7A guidelines. JenKem Technology can help customers file DMFs with the US FDA and has the capability to file for patents worldwide to protect the customers’ interests.

As of July 2020, JenKem Technology has 67 patent approvals (35 in China, 20 in US, 8 in Europe, 3 in Japan, 1 in Australia), 48 pending patent applications (22 in China, 16 in US, 5 in Europe, 1 in India, 1 in Brazil, 1 in Korea, 2 PCT), several DMFs filed with the FDA, and many other innovative technologies under development.

For inquiries on cGMP production of PEG derivatives please contact us at To place bulk PEG orders please contact us at for a quotation.

For custom PEG synthesis of products with MW and functionalities different from our catalog selection below, custom PEGylated conjugates, and PEGylation services, please contact us at

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.