法匹拉韦是一种病毒RNA聚合酶 (RNA polymerase) 抑制剂，可转变为其活性形式 Favipiravir-ribofuranosyl-5′-triphosphate (RTP)。Favipiravir-RTP 抑制流感病毒RNA依赖性的RNA聚合酶 (RdRP) 活性，IC50 为 341 nM，是一种实验性抗病毒药物，具有抗多种RNA病毒的活性，它是吡嗪类酰胺衍生物，对流感病毒、西尼罗河病毒、黄热病病毒、口蹄疫病毒以及其他黄病毒、沙粒病毒、本雅病毒和甲型病毒有活性。
Methyl 3-amino-6-bromopyrazine-2-carboxylate
2,2-Diethoxyacetic acid
6-Fluoro-3-oxo-3,4-dihydropyrazine-2-carboxamide
Methyl 6-bromo-3-methoxypyrazine-2-carboxylate
Ethyl diethoxyacetate
Benzophenoneimine
3,6-Difluoropyrazine-2-carbonitrile
3,6-Dichloropyrazine-2-carbonitrile
Methyl 5-hydroxyisoxazolo[4,5-b]pyrazine-3-carboxylate
Methyl 5-chloroisoxazolo[4,5-b]pyrazine-3-carboxylate
6-Fluoro-3-oxo-3,4-dihydropyrazine-2-carbonitrile
Aminoacetonitrile
5-Fluoro-isoxazolo[4,5-b]pyrazine-3-carboxylic acid methyl ester
