• CAS No.：
  9004-74-4
• Synonyms：
  mPEG-Hydroxy
  Polyethylene glycol monomethyl ether
  Methoxypolyethylene glycols
  
• Purity：
  ≥95%
• Recommended Storage Condition：
  Store at -5°C,keep in dry and avoid sunlight.
• Uses：
  

mPEG-OH is a linear monofunctional PEG acid reagent containing a methoxy (CH3O)-capped polyethylene glycol with one hydroxyl group. It is one of the most common PEG raw materials for further derivatization or functionalization to prepare other reactive functional groups on PEG.
mPEG-OH has so far been used for various commercial PEGylated drugs, such as PEG-Interferon and PEG-GCSF. And according to public information, mPEG-OH is one of the PEG raw materials for Pfizer's and Moderna's COVID-19 vaccines.

Biopharma PEG offers a wide range of PEG products from lab to commercial scale in both non-GMP and GMP grades. Email at sales@biochempeg.com and start using a superior product for your next product R&D project.

Cited Publications

This PEG derivative has been cited in peer-reviewed scientific publications. Browse the references below to learn more.

1. Shortwave Infrared Hemicyanine-6 for Cancer-Activated and Shaving-Free Preclinical Imaging of Lung Metastasis, Hanyu Yang, Donghao Li, Jiayan Wu, and Kanyi Pu, Journal of the American Chemical Society Article ASAP, DOI: 10.1021/jacs.5c06682
2. Kuddushi M, Pawar A, Sharaf MG, Unsworth L, Zhang X. Evaluating electrospun polycaprolactone fibers for blood-contacting applications. ChemRxiv. 2025; doi:10.26434/chemrxiv-2025-qvt7v 
3. Yu, J., Wu, J., Huang, J. et al. Hypoxia-tolerant polymeric photosensitizer prodrug for cancer photo-immunotherapy. Nat Commun 16, 153 (2025). https://doi.org/10.1038/s41467-024-55529-8 
4. Y. Li, J. F. Scheerstra, Y. Liu, A. C. Wauters, J. Wang, H. Wu, T. Patiño, A. Llopis-Lorente, J. C. M. van Hest, L. K. E. A. Abdelmohsen, J. Polym. Sci. 2024, 62(10), 2215. https://doi.org/10.1002/pol.20230941

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