In the title compound, C13H16N4O2, the pyrazole ring forms a dihedral angle of 50.61 (6)° with the 3-nitro-phenyl ring. The plane of the nitro group is twisted by 6.8 (7)° out of the plane of the phenyl ring. In the crystal, the molecules are linked by N—H⋯N and N —H⋯O hydrogen bonds, forming sheets in the bc plane. In addition, a weak C—H⋯N interaction is observed.
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