dU (Deoxyuridine) phosphoramidite,IUPAC name:5′-O-(4,4′-Dimethoxytrityl)-2′-deoxyuridine-3′-O-[O-(2-cyanoethyl)-N,N’-diisopropylphosphoramidite] .
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.