The title compound, C12H10N2O3, exists in the E conformation. The five-membered ring and the phenyl rings form dihedral angles of 36.73 (10) and 12.22 (10)°, respectively, with the central C(=O)N2C unit. The crystal packing is dominated by strong N-H⋯O and O-H⋯N hydrogen bonds. Together with weaker C-H⋯O inter-actions, these establish a three-dimensional supra-molecular network.
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| http://dx.doi.org/10.1107/S1600536814001822 | DOI Listing |
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