(E)-1-(4-Bromo-phen-yl)-3-(2,4,6-trimethoxy-phen-yl)prop-2-en-1-one.

The mol-ecule of the title chalcone derivative, C(18)H(17)BrO(4), is twisted, the dihedral angle between the 4-bromo-phenyl and 2,4,6-trimethoxy-phenyl rings being 39.17 (6)°. The three meth-oxy groups are oriented in two different conformations whereby two meth-oxy groups are coplanar, whereas the third is twisted with respect to the attached benzene ring [C-O-C-C torsion angles of -2.84 (18), -2.80 (18) and -9.31 (18)°]. Weak intra-molecular C-H⋯O inter-actions generate two S(5) and one S(6) ring motifs. In the crystal structure, mol-ecules are linked into supra-molecular sheets parallel to the bc plane by weak C-H⋯O inter-actions. These sheets are stacked along the a axis. The crystal structure is further stabilized by weak C-H⋯π inter-actions.