1-(3-aminopropyl)-5-methylpyrimidine-2,4-dione

6-hydroxy-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-methylidene-1,3-diazinane-2,4-dione

4-O-甲基-胸苷

5-乙烯基-2'-脱氧尿苷

3',5'-二-O-甲磺酰基胸苷