mPEG8-OH Product Catalog # Size Price (USD) Quantity mPEG8-OH281406-5G5 g$410.00 - mPEG8-OH-5g quantity + mPEG8-OH281406-25G25 g$925.00 - mPEG8-OH-25g quantity + Add to cart Description Synonym: Octaethylene Glycol Monomethyl Ether CAS #: 25990-96-9 Molecular Formula: C17H36O9 Molecular Weight: 384.5