mPEG5-OH Product Catalog # Size Price (USD) Quantity mPEG5-OH281403-5G5 g$320.00 - mPEG5-OH-5g quantity + mPEG5-OH281403-25G25 g$720.00 - mPEG5-OH-25g quantity + Add to cart Description Synonym: Pentaethylene Glycol Monomethyl Ether CAS #: 23778-52-1 Molecular Formula: C11H24O6 Molecular Weight: 252.3