1,5-anhydro-3-O-benzoyl-6-O-monomethoxytrityl-2-deoxy-2-(N6-benzoyladenin-9-yl)-D-altro-hexitol 、 alkaline earth salt of/the/ methylsulfuric acid 生成 2-(N
6-Benzoyl-adenin-9-yl)-3-O-benzoyl-2-deoxy-4-O-[N,N-diisopropyl(2-cyanoethyl)]phosphoramidite-6-O-monomethoxytrityl-D-altritol