HS-PEG3-CH2CH2COOH Product Catalog # Size Price (USD) Quantity HS-PEG3-CH2CH2COOH282701-1G1 g$555.00 - HS-PEG3-CH2CH2COOH-1g quantity + HS-PEG3-CH2CH2COOH282701-5G5 g$1,388.00 - HS-PEG3-CH2CH2COOH-5g quantity + Add to cart Description CAS #: 1347750-82-6 Molecular Formula: C9H18O5S Molecular Weight: 238.3