One of the short-acting Sulfonamides used in combination with Pyrimethamine to treat toxoplasmosis in patients with acquired immunodeficiency syndrome and in newborns with congenital infections. Sulfadiazine is a Sulfonamide Antibacterial. The chemical classification of sulfadiazine is Sulfonamides. Sulfadiazine is a synthetic pyrimidinyl sulfonamide derivative, short-acting bacteriostatic Sulfadiazine inhibits bacterial folic acid synthesis by competing with para amino benzoic acid. It is used in combination with pyrimethamine to treat toxoplasmosis in patients with acquired immunodeficiency syndrome and in newborns with congenital infections.Loss on Drying:≤ 0.5%Melting Point:253°C (dec.) (lit.)Solubility:DMSO, Methanol (lit)Storage and Stability:Powder may be stored at 4C. Stable for 6 monthsImportant Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological. Toxicity and Hazards:All products should be handled by qualified personnel only, trained in laboratory procedures.