Received 12 December 2012
The chlorophenyl group of the title compound, C18H12ClNO4, is disordered over two orientations with occupancies of 0.331 (8) and 0.669 (8). An intramolecular hydrogen bond is formed between a hydroxy group and the acyclic carbonyl group. In the crystal, molecules are linked into chains along  by O-HO and C-HO hydrogen bonds, forming a ladder motif.
For similar structures, see: Ravinder et al. (2012); Sengupta et al. (2012). For the synthesis, see: Chen et al. (2011); Kim & Hong (2011). For the biological activity of similar structures, see: Kim et al. (2010).
Data collection: SMART (Bruker, 2002); cell refinement: SAINT (Bruker, 2002); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: FY2085 ).
We are grateful to Attending Physician Tongqin Hao (The First Affiliated Hospital of Xinxiang Medical University, Henan, China) for the assistance with the antitumor assay.
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