1-(2',3'-Anhydro-.beta.-D-ribofuranosyl)-1,2,4-triazole-3-carboxamide 131922-29-7 1H-1,2,4-Triazole-3-carboxamide, 1-(2,3-anhydro-.beta.-D-ribofuranosyl)- 2',3'-Epoxy Ribavirin AIDS-002304 AIDS002304