In the title molecule, C14H9BrO3S, the the prop-2-en-1-one (enone) fragment is close to planar Related Parts [C—C—C—O = 2.5 (7)°] and it subtends dihedral angles of 12.5 (3) and 5.
3 (4)° with respect to the thiophene and benzene rings, respectively.The dihedral angle between the aromatic ring systems is 12.60 (18)°.
Two C—H.O interactions help to consolidate the Stove Knob non-centrosymmetic crystal packing, which features undulating (100) sheets incorporating C(11) and C(12) chain motifs.