Received 12 December 2011
aMOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, People's Republic of China, and bThe First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, People's Republic of China
Correspondence e-mail: email@example.com
The asymmetric unit of the title compound, C8H7N3O5, contains two independent molecules in which the amide plane is oriented at dihedral angles of 29.82 (2) and 31.17 (2)° with respect to the benzene ring. In the crystal, molecules are connected via intermolecular N-HO hydrogen bonds, forming chains running along the b axis.
Data collection: CAD-4 Software (Enraf-Nonius, 1985); cell refinement: CAD-4 Software; data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: XU5409 ).
This work was supported by the National Natural Science Foundation of China (30940094) and the Science Foundation for Excellent Youth Scholars of the Education Commission of Hunan Province, China (10B077).
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