Experimental

R factor = 0.035; wR factor = 0.091; data-to-parameter ratio = 12.6. In the title molecule, C21H14N4O4S, the pyrazole ring forms dihedral angles of 45.6 (1), 87.7 (1) and 27.4 (1) with the phenyl, sulfur-substituted benzene and nitro-substituted benzene rings, respectively. In the crystal, molecules are connected by weak C—H O and C—H N hydrogen bonds into layers parallel to (010). Related literature For the pharmacological and medicinal properties of pyrazol