HOOC-PEG4-COOH Product Catalog # Size Price (USD) Quantity HOOC-PEG4-COOH281802-1G1 g$343.00 - HOOC-PEG4-COOH-1g quantity + HOOC-PEG4-COOH281802-5G5 g$879.00 - HOOC-PEG4-COOH-5g quantity + Add to cart Description Synonym: α, ω-Dipropionic acid tetraethylene glycol CAS #: 439114-13-3 Molecular Formula: C14H26O9 Molecular Weight: 338.4