9-Hydroxy-4-methyl-9,10-dihydrobenzo[h]coumarin

Coumarin derivatives are used as antifungal compounds, anticoagulants and laser dyes. In the title compound, the dihydrobenzene ring adopts a half-chair conformation and the hydroxyl group is involved in an O-H...O hydrogen bond. The inversion-related molecules are stacked 3.446 (4) Å apart along the c axis.

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