5-Hydroxy-7-methoxy-2-methyl-4H-chromen-4-one from Dysoxylum macrocarpum (Meliaceae)

5-Hydroxy-7-methoxy-2-methyl-4H-chromen-4-one from Dysoxylum macrocarpum (Meliaceae)

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Both independent molecules in the asymmetric unit of the title compound, C11H10O4, are almost planar (r.m.s.

deviations sal manaro knives = 0.011 and 0.033 Å).

In both molecules, the hydroxy group is intramolecularly hydrogen bonded to the ketonic O atom.The independent molecules are stacked alternately along the a axis, with the centroids of their chromene ring separated by distances of ckf snafu 2.0 4.490 (1) and 3.

621 (1) Å.