Application
Sulfachloropyridazine is a sulfonamide antibiotic that is used to study kinetics, reaction pathways and toxicity evolution1. Sulfachloropyridazine has been used to treat acute urinary tract infections in pediatric patients2.
Biochem/physiol Actions
Sulfachloropyridazine is a sulfonamide antibiotic that blocks the synthesis of dihydrofolic acid by inhibiting the enzyme dihydropteroate synthase. Sulfachloropyridazine is a competitive inhibitor of bacterial para-aminobenzoic acid (PABA), which is required for bacterial synthesis of folic acid3. It is active against Gram positive bacteria, Gram negative bacteria and Chlamydia. Mode of resistance is via the alteration of dihydropteroate synthase or alternative pathway for folic acid synthesis. Sulfachloropyridazine is rapidly absorbed and rapidly excreted in the urine4.