mPEG4-CH2CH2COOH Product Catalog # Size Price (USD) Quantity mPEG4-CH2CH2COOH280802-1G1 g$253.00 - mPEG4-CH2CH2COOH-1g quantity + mPEG4-CH2CH2COOH280802-5G5 g$530.00 - mPEG4-CH2CH2COOH-5g quantity + Add to cart Description CAS #: 81836-43-3 Molecular Formula: C12H24O7 Molecular Weight: 280.3