1-[(2R,3R,5S)-3-azido-5-(hydroxymethyl)oxolan-2-yl]pyrimidine-2,4-dione

1-[3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-4-(methylamino)pyrimidin-2-one

5-氟-2',3'-异亚丙基尿苷

2’-叠氮-2’-脱氧尿苷

2’-O-(2-甲氧基乙基)尿苷