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Acta Cryst. (2008). E64, o745 [ doi:10.1107/S1600536808007514 ]
Abstract: The title compound, C7H6N4O4, plays an important role in the synthesis of biologically active compounds. The planar hydrazone group is oriented at a dihedral angle of 8.27 (3)° with respect to the benzene ring. In the crystal structure, intermolecular N-H
O and N-H
N hydrogen bonds link the molecules.
Online 29 March 2008
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