5'-O-(4,4'-Dimethoxytrityl)-N4-benzoyl-2'-deoxycytidine (CAS# 67219-55-0) is a cytidine nucleoside derivative, and has been used as a reactant with synthetic modified DNA and RNA, such as in the site-selective RNA activation by acridine-modified oligodeoxynucleotides in metal-ion catalyzed hydrolysis.