5′-O-DMTr-2′-Trifluoroacetamido-G(iBu)-3′-CE-Phosphoramidite

N2-Isobutyryl-5'-O-(4, 4'-dimethoxytrityl)-2'-Trifluoroacetamido-2'-deoxyguanosine-3'-cyanoethyl-Phosphoramidite