Butyl 4-(4-methylbenzenesulfonamido)benzoate

In the title compound, C18H21NO4S, the aromatic rings are almost normal to each other, with a dihedral angle of 89.27 (18)degrees. The molecular conformation is stabilized by an intramolecular C-H center dot center dot center dot O interaction, which generates an S(6) motif. In the crystal, N-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds lead to the formation of chains propagating along [010]. Neighbouring chains are linked via a C-H center dot center dot center dot pi interaction. The -CH2CH2CH3 atoms of the butyl group are disordered over two sets of sites, with a refined site-occupancy ratio of 0.536 (16): 0.464 (16).