4-pyridinecarboxylic acid, 2-[(1,2,3,4-tetrahydro-6-methyl-2,4-dioxo-5-pyrimidinyl)sulfonyl]hydrazide; N'-[(6-Methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)sulfonyl]isonicotinohydrazide
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