In the title compound, C14H9Cl2N3O3S·C3H7NO, the two aromatic rings enclose a dihedral angle of 32.93 (12)°. The thiourea molecule exists in its thione form in the solid state with typical C=S and C—N bond lengths. In the crystal, N—H...O hydrogen bonds exist between the thiourea and carbonyl groups on the same and neighboring molecules. In addition, each dimethylformamide solvate molecule forms a hydrogen bond to one N atom of the thiourea group.
