Scandenin

The crystal structure of scandenin [systematic name: 4-hydroxy-3-(4-hydroxy­phenyl)-5-methoxy-8,8-di­methyl-6-(3-methyl-2-butenyl)-2H,8H-pyrano­[2,3f]­chromen-2-one], C₂₆H₂₆O₆, has been determined. The compound crystallizes in the monoclinic space group P2₁/c with two independent but chemically identical mol­ecules in the asymmetric unit. In both mol­ecules, the coumarin moiety is planar and the angularly fused pyran ring is in a sofa conformation. The crystal structure is stabilized by intra- and intermolecular O—H...O hydrogen bonds, with O...O distances in the range 2.601 (1)–2.699 (2) Å.