67-56-1
甲醇
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34604-60-9
5-羟基吡嗪-2-羧酸
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~65%
13924-95-3
5-羟基吡嗪-2-羧酸甲酯
77168-76-4
3-carbamoyl-1,6-dihydro-6-oxo-2-pyrazinecarboxylic acid
57005-60-4
6-OXO-1,6-DIHYDROPYRAZINE-2,3-DICARBONITRILE
13924-96-4
5-羟基-吡嗪-2-羧酸酰胺