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In the title compound, C18H19BrFN3S, the 1,2,4-triazole ring is nearly planar with a maximum deviation of −0.009 (3) and 0.009 (4) Å, respectively, for the S-bound C atom and the N atom bonded to the bromofluorophenyl ring. The phenyl and triazole rings are almost perpendicular to each other, forming a dihedral angle of 89.5 (2)°. In the crystal, the molecules are linked by weak C—H...π(phenyl) interactions, forming supramolecular chains extending along the c-axis direction. The crystal packing is further consolidated by intermolecular N—H...S hydrogen bonds and by weak C—H...S interactions, yielding double chains propagating along the a-axis direction. The crystal studied was refined as a racemic twin.

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