3-Isobutyl-4-phenyl-sulfan-yl-1H-pyrazol-5-ol

The asymmetric unit of the title compound, C(13)H(16)N(2)OS, contains two independent mol-ecules (A and B). The pyrazole ring [maximum deviations = 0.0049 (17) Å in mol-ecule A and 0.0112 (19) Å in mol-ecule B] makes a dihedral angle of 70.23 (11) and 73.18 (12)° with the phenyl ring in mol-ecules A and B, respectively. The isobutyl group in mol-ecule B is disordered over two sets of sites with a ratio of refined occupancies of 0.858 (5):0.142 (5). In the crystal, mol-ecules A and B are linked via a pair of inter-molecular N-H⋯O hydrogen bonds, generating an R(2) (2)(8) ring motif. These ring motifs are further linked into two-dimensional arrays parallel to the bc plane by inter-molecular N-H⋯O and weak C-H⋯S hydrogen bonds. The crystal is further stablized by weak π-π inter-actions [centroid-centroid distances = 3.5698 (13) and 3.5287 (12) Å].