(E)-1-(Thio­phen-2-yl)-3-(2,4,6-tri­meth­oxy­phen­yl)prop-2-en-1-one

There are two crystallograpically independent mol­ecules in the asymmetric unit of the title heteroaryl chalcone derivative, C(16)H(16)O(4)S, with slightly different conformations. The thienyl ring of one mol­ecule is disordered over two positions, with a refined site-occupancy ratio of 0.713 (5):0.287 (5). The mol­ecules are twisted: the dihedral angle between the thienyl and benzene rings is 9.72 (19)° in the ordered mol­ecule, and 3.8 (4) and 2.1 (8)° for the major and minor components, respectively, in the disordered mol­ecule. In both mol­ecules, all three substituted meth­oxy groups are coplanar with the benzene ring to which they are attached. In each mol­ecule, a weak intra­molecular C—H⋯O inter­action generates an S(6) ring motif. In the crystal structure, adjacent mol­ecules are linked into a three-dimensional network by weak C—H⋯O inter­actions.