mPEG7-NHS Product Catalog # Size Price (USD) Quantity mPEG7-NHS281304-500MG500 mg$365.00 - mPEG7-NHS-500mg quantity + mPEG7-NHS281304-1G1 g$548.00 - mPEG7-NHS-1g quantity + Add to cart Description CAS #: 756525-90-3 Molecular Formula: C22H39NO12 Molecular Weight: 509.5