阿糖尿苷

1-beta-D-阿拉伯呋喃糖基-5-碘尿嘧啶

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

(E)-5-(2-羧基乙烯基)脲啶

methyl 3-[1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-2,4-dioxopyrimidin-5-yl]prop-2-enoate