6-(4-Methyl-phen-yl)-3-(3,4,5-trimethoxy-phen-yl)-1,2,4-triazolo[3,4-b][1,3,4]thiadiazole.

In the mol-ecule of the title compound, C(19)H(18)N(4)O(3)S, the central heterocylic ring system is oriented with respect to the trimethoxy-phenyl and 4-methyl-phenyl rings at dihedral angles of 1.1 (5) and 15.1 (5)°, respectively. The dihedral angle between the two benzene rings is 16.1 (4)°. In the crystal structure, mol-ecules are linked by inter-molecular C-H⋯O hydrogen bonds, and an intra-molecular C-H⋯N inter-action also occurs.