5'-O-trityl-3'-deoxycytidine

尿嘧啶核苷

5’-O-三苯甲基尿苷

2',5'-di-O-p-chlorobenzoyl-N4-propionyl-3'-deoxycytidine

2’-O-(叔-丁基二甲基硅烷基)-3’-脱氧-5’-O-三苯甲基尿苷