DMT-G(iBu)-(S)-GNA Phosphoramidite

(S)-1-(bis(4-methoxyphenyl)(phenyl)methoxy)-3-(2-isobutyramido-6-oxo-1, 6-dihydro-9H-purin-9-yl)propan-2-yl(2-cyanoethyl)diisopropylphosphoramidite