4-chloro-1-(tri-O-acetyl-β-D-ribofuranosyl)-1H-pyrimidin-2-one

4-ethoxy-1-(β-D-ribofuranosyl)-2(1H)-pyrimidinone

2',3',5'-三乙酰尿苷

2’-C-甲基尿苷

2'-C-甲基尿苷 2',3',5'-三苯甲酸酯