Twenty-one new (un)substituted benzoylureas and (un)substituted phenoxyacetylureas have been synthesized by the reaction of 2-amino-5-mercapto- 1,3,4-thiadiazole with (un)substituted benzoyl isocyanates and (un)substituted phenoxyacetyl isocyanates, respectively, and their structures were confirmed by IR, 1 H NMR spectra and elemental analysis. The preliminary biological activity tests showed that some of the title compo...
