“SYNTHESIS OF N-[4-({4-[(5-METHYL-1, 3, 4-THIADIAZOL-2-YL)SULFAMOYL] PHENYL}SULFAMOYL)PHENYL]AMINE: AN IMPURITY IN THE ANTIBACTERIAL DRUG SULFAMETHIZOLE”, Int. J. Pharm. Sci. Drug Res., vol. 4, no. 2, pp. 134–136, Apr. 2012, doi: 10.25004/IJPSDR.2012.040209.