(E)-6-Bromo-3-{2-[2-(2-chloro-benzyl-idene)hydrazin-yl]thia-zol-5-yl}-2H-chromen-2-one dimethyl sulfoxide monosolvate.

In the title compound C(19)H(11)N(3)O(2)SClBr·C(2)H(6)OS, the mol-ecule adopts an E configuration about the central C=N double bond. The chromene ring system and the thia-zole ring are approximately planar, with maximum deviations of 0.027 (2) and 0.003 (1) Å, respectively. The central thia-zole ring makes dihedral angles of 21.82 (9) and 5.88 (7)° with the chloro-substituted phenyl ring and the chromene ring, respectively. In the crystal, mol-ecules are connected via N-H⋯O, N-H⋯S and C-H⋯O hydrogen bonds, forming supra-molecular chains along the c axis. An intra-molecular C-H⋯O hydrogen bond occurs. π-π inter-actions are observed between the thia-zole and phenyl rings [centroid-centroid distance = 3.6293 (10) Å]. A short Br⋯Cl contact of 3.37 (6) Å also occurs.