3,5,7-Triacetoxy-2-(3,4-diacetoxyphenyl)-4H-1-benzopyran-4-one

Abstract

In the title compound, C25H20O12, commonly known as pentaacetylated quercetin, the benzene ring and one of its methoxy substituent groups is disordered (site occupancy ratio 0.523:0.427), with a dihedral angle between the major-disorder component and the benzene ring of the benzopyranone moiety of 10.8 (6)°. In the crystal, C—H...O hydrogen-bonding interactions give chains which extend alongb.