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Acta Cryst. (2008). E64, o840 [ doi:10.1107/S1600536808009318 ]
Abstract: The molecule of the title compound, C6H6N4O4, is almost planar, being stabilized by two intramolecular N-H
O hydrogen bonds. Further N-HO links lead to a sheet in the crystal structure.
Online 16 April 2008
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