In the title molecule, C24H21N3OS, the imidazole ring subtends dihedral angles of 4.6 (1) and 20.2 (1)° with the thiophene and iso-propylbenzene rings, respectively. The plane of the imidazole ring forms a dihedral angle of 39.9 (1)° with the phenyl ring. An intramolecular C—H...N hydrogen bond closes an S(6) ring. In the crystal, pairs of C—H...O hydrogen bonds link molecules into inversion dimers featuring R22(10) graph-set motifs. Aromatic π–π stacking interactions are observed between the thiophene and imidazole rings [centroid–centroid distance = 3.570 (2) Å] and thiophene and benzene rings [centroid–centroid distance = 3.889 (2) Å]. Weak C—H...π interactions are also observed.
