1'-(5'-ODMTr-2'-deoxyl-β-D-ribofuranosyl)-4-methyl-1-methyl-2-nitro-1H-imidazole-3'-CE-Phosphoramidite
1'-(5'-O-(4, 4'-dimethoxytrityl)-2'-deoxyl-β-D-ribofuranosyl)-4-methyl-1-methyl-2-nitro-1H-imidazole-3'-O-[(2-cyanoethyl)-N, N-diisopropyl] Phosphoramidite
