(E)-2-(3,4-Dimeth-oxy-benzyl-idene)-5,6-dimeth-oxy-2,3-dihydro-1H-inden-1-one.

In the title compound, C(20)H(20)O(5), the 2,3-dihydro-1H-indene ring system is essentially planar [maximum deviation = 0.010†(1)†à ] and is inclined at an angle of 4.09†(4)° with respect to the phenyl ring. The C=C bond has an E configuration. In the crystal, the mol-ecules are linked into chains propagating in [102] via inter-molecular C-H⋯O hydrogen bonds. The crystal structure is further consolidated by C-H⋯π inter-actions.