3-羟基吡嗪-2-羧酸;3-羟基-2-吡嗪甲酸;2-羟基吡嗪-3-羧酸;
2-Pyrazinecarboxylicacid,3,4-dihydro-3-oxo;3-Hydroxy-2-pyrazinecarboxylic acid;3-oxo-3,4-dihydro-pyrazine-2-carboxylic acid;3-Oxo-3,4-dihydro-pyrazin-2-carbonsaeure;2-Oxo-1,2-dihydropyrazine-3-carboxylic acid;
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