Cytosine glycols are intermediate unstable products of cytosine oxidation. These, in turn, are thought to undergo deamination to uracil glycol, dehydration to 5-hydroxycytosine, or both deamination and dehydration to 5-hydroxyuracil.
The compounds of every Wikipedia article carrying a Chembox or a Drugbox, refreshed daily, with the values their infoboxes give. The pages need JavaScript; the API does not.