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CAS number 3690-10-6
PubChem 100016
ChemSpider 90372
Jmol-3D images Image 1
Molecular formula C9H12N2O5
Molar mass 228.20 g mol−1
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Zebularine is a nucleoside analog of cytidine. It is a "transition state analog inhibitor of cytidine deaminase by binding to the active size as covalent hydrates. Also shown to inhibit DNA methylation and tumor growth both in vitro and in vivo."[1]

In a small study of mice with a defective Adenomatous polyposis coli gene, oral administration of zebularine to males had no effect on the overall methylation of DNA or the number of polyps, but in females the average number of polyps was reduced from 58 to 1.[2] It has therefore been suggested for drug use as a prototype of epigenetic therapy for cancer chemoprevention.[3]

Zebularine (left) closely resembles cytidine (right), but lacks the 4'-amino group.