Products › Poly(2-ethyl-2-oxazoline), bifunctional, carboxylic acid NHS ester and azide terminated, >95%, average Mn 3,500, PDI ≤1.2 Image 1 of 1 Poly(2-ethyl-2-oxazoline), bifunctional, carboxylic acid NHS ester and azide terminated, >95%, average Mn 3,500, PDI ≤1.2 $229.00 SKU: NZ20012-500 mgPack size: 500 mgLinear Formula: COOSuCH2(C5H9NO)nN3Certificate of Analysis (COA) included. Add To Cart Added! SKU: NZ20012-500 mgPack size: 500 mgLinear Formula: COOSuCH2(C5H9NO)nN3Certificate of Analysis (COA) included.