mPEG16-NH2 Product Catalog # Size Price (USD) Quantity mPEG16-NH2281212-250MG250 mg$407.00 - mPEG16-NH2-250MG quantity + mPEG16-NH2281212-1G1 g$889.00 - mPEG16-NH2-1G quantity + Add to cart Description CAS #: 907577-50-8 Molecular Formula: C33H69NO16 Molecular Weight: 735.9