4,4'-双甲氧基三苯甲基氯

尿嘧啶核苷

5'-O-(4,4'-dimethoxytrityl)-2'-O-[2-(N,N-dimethylcarbamoyl)ethyl]uridine

2'-O-(2-Trifluoromethyl-3,3,3-trifluoropropanoxymethyl)-5'-O-(4,4'-dimethoxytrityl)uridine

3′,5′-O-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-2′-O-(methylthiomethyl)uridine