(2<i>Z</i>)-3-(3-Bromoanilino)-1-(5-hydroxy-3-methyl-1-phenyl-1<i>H</i>-pyrazol-4-yl)but-2-en-1-one

In the title compound, C20H18BrN3O2, the central carbonyl group forms amine-N&amp;#8212;H...O and hydroxy-O&amp;#8212;H...O hydrogen bonds, which lead to two fused S(6) rings. The N-bound phenyl ring is coplanar with the five-membered ring to which it is attached [dihedral angle = 5.22&amp;#8197;(18)&amp;#176;], but the dihedral angle [33.87&amp;#8197;(17)&amp;#176;] between the terminal phenyl and bromobenzene rings indicates an overall twist in the molecule. In the crystal packing, molecules assemble into dimeric aggregates via C&amp;#8212;H...&amp;#960; interactions.