Trimethoprim is an antifolate antibacterial agent. Trimethoprim is used in combination with sulfamethoxazole to treat a number of infections, including those of the urinary tract, respiratory tract, and gastrointestinal tract. Trimethoprim is often used in combination with sulfamethoxazole due to their complementary and synergistic mechanisms but may be used as a monotherapy in the treatment. Synthink is a most trusted source of Trimethoprim Degradation Impurity, Trimethoprim Genotoxic impurity, Trimethoprim Process Impurity, USP related compound, Trimethoprim Nitrosamine impurity, N-Nitroso impurity etc. which are listed on this page.