In the title compound, C25H23N3O3S, an intramolecular N—H.O interaction generates an S(6) ring, which stabilizes the enamine–keto form of the compound.This S(6) ring and the pyrazole ring FACE MOISTURISER are essentially coplanar, making a dihedral angle of 1.49 (6)°.
The bond lengths within the S(6) ring of the molecule lie between classical single- and double-bond lengths, SHARK LIVER OIL indicating extensive conjugation.The structure exhibits a thienyl-ring flip disorder, with occupancy factors in the ratio 64.7 (3):35.3 (3).