Acta Cryst. (2013). E69, o1635 [ doi:10.1107/S1600536813027426 ]
Abstract: In the title compound, C12H9BrN4O, the dihedral angle between the aromatic rings is 12.16 (12)°. An intramolecular N-HN hydrogen bond closes an S(5) ring. In the crystal, C-HO hydrogen bonds link the molecules into C(6) chains propagating in . Very weak aromatic - stacking [centroid-centroid separations = 3.9189 (15) and 3.9357 (15) Å] is also observed.
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