5-Chloro-3-ethyl-sulfinyl-7-methyl-2-(4-methyl-phen-yl)-1-benzo-furan

In the title compound, C18H17ClO2S, the dihedral angle between the mean planes of the benzo-furan ring system and the methyl-phenyl ring is 14.50 (4)°. The centroid-centroid distances between the benzene and the methyl-phenyl rings are 3.827 (2) and 3.741 (2) Å, while the centroid-centroid distance between the furan and methyl-phenyl rings is 3.843 (2) Å. These distances indicate π-π inter-actions; on the other hand, the inter-planar angles between the benzene and methyl-phenyl rings, and between the furan and methyl-phenyl rings are 13.89 (4) and 15.53 (4)°, respectively. In the crystal, the mol-ecules stack along the a-axis direction.