?:definition
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The 3-O-valine ester prodrug of the nucleoside analog 2\'-C-methylcytidine with anti-hepatitis C virus (HCV) activity. Upon administration, valopicitabine is converted into 2\'-C-methylcytidine; upon phosphorylation into its 5-triphosphate form, this metabolite inhibits viral RNA chain elongation and viral RNA-dependent RNA polymerase activity. This blocks viral production of HCV RNA and thus viral replication.
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