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In the title compound, C 12 H 16 N 6 O 2 ·2H 2 O, the organic mol­ecule, except for the methyl H atoms, is essentially planar, the r.m.s. deviation from planarity being 0.044 Å. The crystal structure is stabilized by inter­molecular O—H⋯O and O—H⋯N hydrogen bonds which form chains.

N2′,N5′-Diisopropylidenepyrazine-2,5-dicarbohydrazide dihydrate

N^2′,N^5′-Diisopropylidenepyrazine-2,5-dicarbohydrazide dihydrate