Acta Cryst. (2007). E63, o3764 [ doi:10.1107/S1600536807038809 ]
Abstract: In the title compound, C10H8N2O2, the dihedral angle between the phenyl and pyrazole ring planes is 21.27 (6)°. Intermolecular O-HO and N-HN hydrogen bonds link the molecules into chains along c. These are further connected by intermolecular C-HO hydrogen bonds, resulting in a two-dimensional framework.
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