In the title compound, C27H27N3O3S3·CH4O, the dihedral angles formed by the mesitylene ring with the three oxopyridyl rings are 89.6 (1), 75.5 (1) and 80.69 (1)°, indicating that all three are nearly perpendicular to the mesitylene ring. Intramolecular C—H⋯S hydrogen bonds generate S(6) ring motifs. The crystal structure is stabilized by intramolecular C—H⋯S and intermolecular C—H⋯O hydrogen bonds and weak C—H⋯π interactions.
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