organic compounds
Open access
In the title compound, C14H12ClNO4S, the dihedral angle between the chloro- and methoxy-substituted benzene rings is 87.40 (1)°. In the crystal, adjacent molecules form inversion-related dimers through strong N—HO hydrogen bonds, generating R22(8) loops. The dimers are further connected through two C—HO interactions that form C(11) chains and R22(14) loops. Aromatic π–π stacking interactions [centroid–centroid separation = 3.8574 (1) Å] are also observed.