5-Acetyl-3-(5-phenyl-1H-pyrazol-3-yl)-1,3,4-thia­diazol-2(3H)-one monohydrate

In the title hydrate, C₁₃H₁₀N₄O₂S·H₂O, the dihedral angles between the central pyrazole ring and its pendant phenyl and thia­diazole rings are 9.93 (8) and 4.56 (7)°, respectively. In the crystal, the components are linked by N—H...O, O—H...N and O—H...O hydrogen bonds, generating [100] chains incorporating R₄⁴(10) loops. A weak C—H...O inter­action helps to consolidate the packing.