((3aR,4R,6R,6aR)-6-(6-amino-9H-purin-9-yl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)methyl methanesulfonate

2'-O-tert-butyldimethylsilyl-5'-O-(4,4'-dimethoxytrityl)-6-N-benzoyladenosine

5'-O-dimethoxytrityladenosine