organic compounds
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The title compound, C10H9Cl2N3O3S, adopts a trans–cis conformation with respect to the position of chloropropionyl and chloronitrobenzene groups respectively, against the thiono about their C—N bonds. The conformation is stabilized by an intramolecular N—HO hydrogen bond. In the crystal, there is a short ClCl contact with a distance of 3.386 (13) Å.