mPEG12-N3 Product Catalog # Size Price (USD) Quantity mPEG12-N3281105-250MG250 mg$397.00 - mPEG12-N3-250mg quantity + mPEG12-N3281105-1G1 g$889.00 - mPEG12-N3-1g quantity + Add to cart Description CAS #: 2170098-29-8 Molecular Formula: C25H51N3O12 Molecular Weight: 585.7