Rehman, Aziz-ur, et al. “Potent Antibacterial Agents: N-Substituted Derivatives of N-(4-Methylpyridin-2-yl)benzenesulfonamide”. Asian Journal of Chemistry, vol. 26, no. 15, July 2014, pp. 4661-4, doi:10.14233/ajchem.2014.16161.