PurePEG, LLC is a leading supplier of high-quality, monodispersed polyethylene glycol (PEG) products with various repeating units (spacer length), end functional groups (X and Y), and various molecular architecture (linear, branched, and multi-armed). While most PEG products are a mixture of different molecular weights, PurePEG is able to manufacture pure, monodispersed PEGs with precise molecular weights using innovative PurePEG Technology from years of research and development. PurePEG developed the first acid functionalized PEG that was used to conjugate antibody and toxin (ADC drug) for treating breast cancer. PEG has earned its place in the biomedical field due to its water solubility, non-toxicity, and non-immunogenicity properties. To date, there are 12 pegylated drugs approved by the FDA to treat a number of chronic diseases. PEGs impact on biological therapies has increased the number of suppliers and manufacturers, but none has come close to PurePEG quality and the capability to manufacture long-chain PEGs. PurePEG stands as the world leader in PEG manufacturing through breakthroughs in research and development.