2'-Deoxy-5'-O-(4,4'-dimethoxytriphenylmethyl)-4-N-dimethylformamidine-6-oxocytidine
5'-O-(4,4'-Dimethoxytriphenylmethyl)-4-N-(dimethylformamidine)-2'-O-methyl-6-oxocytidine
5'-O-(4,4'-Dimethoxytriphenylmethyl)-4-N-dimethylformamidine-6-oxocytidine
4-N-(Dimethylformamidine)-2'-O-phenoxythiocarbonyl-3',5'-O-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-6-oxocytidine
5-Allyl-2'-deoxy-5'-O-(4,4'-dimethoxytriphenylmethyl)-4-N-dimethylformamidine-6-oxocytidine