has role primary carboxamide anticoronaviral agent 1,2,4-triazole-3-carboxamide monocarboxylic acid amide antimetabolite antiinfective agent EC 2.7.7.49 (RNA-directed DNA polymerase) inhibitor aromatic amide ribavirin A 1-ribosyltriazole that is the 1-ribofuranosyl derivative of 1,2,4-triazole-3-carboxamide. A synthetic guanosine analogue, it is an inhibitor of HCV polymerase and possesses a broad spectrum of activity against DNA and RNA viruses. 1-ribosyltriazole