a white to yellowish, crystalline, slightly bitter sulfonamide, C 1 1 H 1 3 N 3 O 3 S, used chiefly in the treatment of infections of the urinary tract.
a synthetic crystalline compound, C 11 H 18 N 4 O 3 , usually combined with a sulfonamide as an antibiotic preparation in the treatment of urinary tract infections and pneumocystis pneumonia.
