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Acta Crystallogr Sect E Struct Rep Online. 2013 Feb 1;69(Pt 2):o258. doi: 10.1107/S1600536813000858. Epub 2013 Jan 19.


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Group of Physics & Chemistry, Faculty of Natural Sciences & Mathematics, State University of Tetovo, 1200 Tetovo, Macedonia.


In the title compound, C(16)H(15)N(3)O(4), the dihedral angle between the chromane and isoxazole rings [r.m.s. deviations = 0.042 and 0.007 Å, respectively] is 20.33 (12)°. The mol-ecular geometry is stabilized by an intra-molecular N-H⋯O hydrogen bond. In the crystal, N-H⋯O hydrogen bonds generate chains along the c-axis direction. The crystal studied was a non-morohedral twin.

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