Acta Cryst. (2010). E66, o1242 [ doi:10.1107/S1600536810015540 ]
Abstract: In he title compound, C13H16N4O3, the pyrazole ring is planar (r.m.s. deviation = 0.054 Å). The pyran ring is not planar; the mean plane makes a dihedral angle of 1.9 (1)° with the pyrazole ring. In the crystal structure, intermolecular N-HN and N-HO interactions lead to a linear chain motif.
Online 30 April 2010
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