The title compound, C(10)H(8)O(4), is one of the coumarins existing in Morinda citrifolia L (Noni). The chromenone ring system is approximately planar with a maximum deviation of 0.0208 (14) Å. The meth-oxy group does not deviate from this plane [C-O-C-C torsion angle = -1.5 (3)°], indicating that the whole mol-ecule is almost planar. In the crystal packing, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into chains. These are further connected by C-H⋯O hydrogen bonds.

DOI: 10.1107/S1600536810029296

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@inproceedings{Beh20107Hydroxy6methoxy2Hchromen2one, title={7-Hy­droxy-6-meth­oxy-2H-chromen-2-one}, author={Hooi-Kheng Beh and Zhari Ismail and Mohd Zaini Asmawi and Wan-Sin Loh and Hoong-Kun Fun}, booktitle={Acta crystallographica. Section E, Structure reports online}, year={2010} }