Thiol PEG Acetic Acid


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


High quality Thiol PEG Acetic Acid with standard quality specification of ≥95% Substitution.

Heterobifunctional Thiol PEG Acetic Acid (HS-PEG-CM, or SH-PEG-COOH) products from JenKem Technology are generally employed as crosslinking agents or as spacers between two different chemical entities, such as a gold nanoparticle and an antibody. The PEG moiety in the heterofunctional PEG derivatives provides water solubility, biocompatibility, and flexibility.

Heterobifunctional PEGylation reagents with molecular weights, branching, and functional groups not listed in our online catalog may be available by custom synthesis. Please inquire at about pricing and availability of custom PEGs.

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

Click here to download the MSDS


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  3. Zhao, B., et al., Single-step, wash-free digital immunoassay for rapid quantitative analysis of serological antibody against SARS-CoV-2 by photonic resonator absorption microscopy, Talanta, 2021, 225, 122004
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  14. Li, B., et al., Sample-free quantification of blood biomarkers via laser-treated skin, Biomaterials, 2015, 59,  P. 30-38.
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Note: Starting July 2016, Thiol PEG Acetic Acid is the new name of the product Thiol PEG Carboxyl (MW 2000 (HS-PEG2000-CM), MW 3500 (HS-PEG3500-CM), MW 5000 (HS-PEG5000-CM) and MW 7500 (HS-PEG7500-CM)). JenKem Technology has revised the name of the product to better reflect the chemical structure, as many other PEG derivatives with a COOH group are offered in the 2016 JenKem USA catalog.

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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