ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, vol.60, 2004 (SCI-Expanded)
In the title compound, C10H8N2O4S, the dihedral angle between the pyrrole and benzene rings is 77.9 ( 1) degrees. Intermolecular C - H ... O hydrogen bonds stabilize the crystal structure, forming molecular chains extending approximately parallel to the c axis and stacked along the b axis.