1-(2-Benzoyl-1-phenyl-eth-yl)-4-[(2-hy-droxy-1-naphth-yl)methyl-idene-amino]-3-methyl-1H-1,2,4-triazole-5(4H)-thione.

In the title compound, C(29)H(24)N(4)O(2)S, intra-molecular O-H⋯N hydrogen bonding influences the mol-ecular conform-ation; the naphthol system and triazole ring form a dihedral angle of 3.88 (7)°. In the crystal, π-π inter-actions between the five- and six-membered rings of neighbouring mol-ecules [centroid-centroid distances = 3.541 (3) and 3.711 (3) Å] consolidate the crystal packing.