Acta Cryst. (2003). E59, o1395-o1397 [ doi:10.1107/S1600536803018075 ]
Abstract: The title compound, C19H14O4, crystallizes with two molecules in the asymmetric unit. The dihydropyran rings adopt a half-chair conformation or a conformation intermediate between a sofa and half-chair. The inversion-related type A and B molecules and vice versa are linked by C-HO hydrogen bonds, forming an infinite chain along the a axis. The molecular packing is stabilized by C-HO interactions.
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