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N4-Benzoylcytidine N-Benzoyl-2'-deoxy-cytidine N4-Acetylcytidine DMT-DCYTIDINE (N6-BENZOYL) CYANOETHYL PHOSPHORAMIDITE) N4,3'-O-DIBENZOYL-2'-DEOXYCYTIDINE 5'-O-(4,4'-DIMETHOXYTRITYL)-N4-BENZOYL-2'-DEOXYCYTIDINE-3'-O-SUCCINIC ACID 5'-O-(4,4'-DIMETHOXYTRITYL)-N4-BENZOYL-5-METHYL-2'-DEOXYCYTIDINE 5-BROMO-DC CEP N4-ANISOYLCYTIDINE