英文别名Favipiravir Carboxylic Acid; 5-fluoro-2-oxo-1H-pyrazine-3-carboxylic acid; 6-Fluoro-3-oxo-3,4-dihydropyrazine-2-carboxylic acid; 2-Pyrazinecarboxylic acid, 6-fluoro-3,4-dihydro-3-oxo-; 6-Fluoro-3,4-dihydro-3-oxo-2-pyrazinecarboxylic acid; 6-Fluoro-3,4-dihydro-3-oxopyrazine-2-carboxylic Acid; 6-fluoro-3-hydroxy-2-pyrazinecarboxylic acid; Favipiravir Impurity 5 
