organic compounds
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In the title compound, C25H22BrN3O5S, the central benzene ring makes dihedral angles of 32.02 (14), 37.49 (18) and 80.52 (13)°, respectively, with the pyrazolone ring, the bromobenzene ring and the terminal phenyl ring. This conformation features a short intramolecular C—HO contact that generates an S(6) ring. In the crystal, inversion dimers linked by pairs of C—HO=C hydrogen bonds occur.