Synonyms: 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-3,4-dihydro-3-oxo-2-pyrazinecarboxylic Acid , 6-fluoro-3-oxo-3,4-dihydropyrazine-2-carboxylic Acid, 6-Fluoro-3,4-dihydro-3-oxopyrazine-2-carboxylic Acid