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