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Acta Crystallogr Sect E Struct Rep Online. 2012 Dec 1;68(Pt 12):o3256. doi: 10.1107/S1600536812042390. Epub 2012 Nov 3.


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  • 1Atta-ur-Rahman Institute for Natural Product Discovery, Universiti Teknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor D. E. Malaysia.


The title compound, C15H14N2O4 adopts an E conformation about the azomethine double bond. Intra-molecular N-H⋯O and O-H⋯N hydrogen bonds generate S(6) rings and help to establish the molecular conformation. The dihedral angle between the benzene rings is 17.84 (10)°. In the crystal, mol-ecules are linked by O-H⋯O and C-H⋯O hydrogen bonds into a two-dimensional network with a herring-bone pattern arranged parallel to the bc plane.

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