mPEG9-OH Product Catalog # Size Price (USD) Quantity mPEG9-OH281407-5G5 g$430.00 - mPEG9-OH-5g quantity + mPEG9-OH281407-25G25 g$968.00 - mPEG9-OH-25g quantity + Add to cart Description Synonym: Nonaethylene Glycol Monomethyl Ether CAS #: 6048-68-6 Molecular Formula: C19H40O10 Molecular Weight: 428.5