(2E)-1-(2-Bromo­phen­yl)-3-(3,4,5-trimeth­oxy­phen­yl)prop-2-en-1-one

In the chalcone title compound, C(18)H(17)BrO(4), the dihedral angle between the mean planes of the 2-bromo- and 3,4,5-trimethoxy-substituted benzene rings is 89.3 (1)°. The angles between the mean plane of the prop-2-en-1-one group and the 2-bromo­phenyl and 3,4,5-trimeth­oxy­phenyl ring planes are 59.7 (1) and 40.5 (8)°, respectively. While no classical hydrogen bonds are present, three weak inter­molecular C—H⋯O inter­actions and weak C—H⋯Br and C—H⋯Cg π-ring stacking inter­actions [C—H⋯Cg distance = 3.377 (2) Å] are observed, which contribute to the stability of crystal packing.