6-Methyl-3-(β-D-2-deoxyribofuranosyl)
pyrrolo[2,3-d]pyrimidin-2-one

Notes: Fluorescent analog of 2’-deoxycytidine.  

6-Methyl-3-(β-D-2-ribofuranosyl)pyrrolo[2,3-
d]pyrimidin-2-one

Notes: A fluorescent analog of cytidine.  

3-(5'-O-Dimethoxytrityl)-β-D-2-
deoxyribofuranosyl)-6-methylpyrrolo[2,3-d]
pyrimidin-2-one

3-(2'-Deoxy-β-D-2-ribofuranosyl)pyrido[2,3-
d]pyrimidine-2,7(8H)-dione

Notes: Fluorescent deoxycytidine analog.