2'-甲氧基胞苷

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

N4-甲基胞苷

N,2'-O-二甲基胞苷

1-[(2R,3R,4R,5R)-4-hydroxy-5-(hydroxymethyl)-3-prop-2-enoxyoxolan-2-yl]-2-sulfanylidenepyrimidin-4-one