Certain novel benzenesulfonylurea compounds derived from a nitrogen-containing carboxylic acid have been prepared by reacting an appropriate sulfonamide with an organic isocyanate or a tri-substituted urea equivalent thereof. The sulfonylureas so obtained are useful in therapy as oral hypoglycemic agents. Typical members include those compounds derived from 2-methoxy-nicotinic acid, of which 1-cyclohexyl-3-4-[2-(5-bromo-2-methoxynicotinamido)ethyl]benzenesulfonyl} urea is a most preferred embodiment.