The molecular structure of the title compound, C26H18N4O6S·C2H6OS, shows an E conformation of the hydrazone double bond. The presence of a methylene group between the benzo[de]isoquinoline and benzenesulfonyl moieties allows the 4-nitrophenyl ring and the benzo[de]isoquinoline system to be parallel with respect to each other, so that the molecule adopts a U-shaped spatial conformation. The dihedral angle between mean planes of these aromatic groups is 4.4 (1)°. This special arrangement enables neighboring molecules to be intercalated, forming slipped π–π interactions [centroid–centroid distance = 3.535 (2) Å] between the 4-nitrophenyl and benzo[de]isoquinoline groups and point-to-face C—H⋯π interactions between the benzo[de]isoquinoline and benzenesulfonyl aromatic systems. In addition, the crystal packing also features an intermolecular N—H⋯O interaction involving the amine group and the dimethyl sulfoxide solvent molecule.
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