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Acta Cryst. (2005). E61, o2665-o2667  [ doi:10.1107/S1600536805022774 ]


J. Xiong, M.-C. Liu and J.-X. Yuan

Abstract: In the title compound, C6H6N2O4, the planar carboxyl group makes a dihedral angle of 74.61 (2)° with the uracil plane. In the crystal structure, intermolecular N-H...O and O-H...O hydrogen bonds link the molecules into a three-dimensional network.

Online 23 July 2005

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