In the mol-ecule of the title compound, C(19)H(17)ClN(2)O(4), the quinoxaline ring system is planar [maximum deviation = 0.013 (3) Å] and oriented at a dihedral angle of 80.18 (3)° with respect to the benzene ring. In the crystal structure, inter-molecular C-H⋯N inter-actions link mol-ecules into chains. π-π contacts between the quinoxaline systems [centroid-centroid distance = 3.654 (1) Å] may further stabilize the structure.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2969970 | PMC |
| http://dx.doi.org/10.1107/S1600536809030074 | DOI Listing |
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