Cotrimoxazole and its Impurities

Co-trimoxazole is used to treat certain bacterial infections, such as pneumonia (a lung infection), bronchitis (infection of the tubes leading to the lungs), and infections of the urinary tract, ears, and intestines. Reference standards of Cotrimoxazole API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.