HS-PEG9-CH2CH2COOH Product Catalog # Size Price (USD) Quantity HS-PEG9-CH2CH2COOH282705-1G1 g$935.00 - HS-PEG9-CH2CH2COOH-1g quantity + HS-PEG9-CH2CH2COOH282705-5G5 g$2,175.00 - HS-PEG9-CH2CH2COOH-5g quantity + Add to cart Description Molecular Formula: C21H42O11S Molecular Weight: 502.6