3-(3,7-dimethylocta-2,6-dienyloxy)-1,8-dihydroxy-6-methyl-9,10-anthrapuinone

The 9,10-anthraquinone ring system of the title compound, C25H26O5, is essentially planar. The O-geranyl substituent is at the meta position with respect to the hydroxyl group. O-H ... O intramolecular hydrogen bonds are observed in the molecular structure. The molecules form centrosymmetric hydrogen-bonded dimers via intermolecular C - H ... O hydrogen bonds which generate rings of motif R-2(2)(10). The crystal structure is further stabilized by weak pi-pi interactions.