Description General description Sulfamethoxazole is a bacteriostatic antibiotic, belonging to the class of sulfonamides. It is widely used in the treatment of pneumocystis, coccidiosis, gastroenteritis, diarrhea, respiratory diseases such as pneumonia, etc. Application Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support. Sulfamethoxazole is used as an analytical reference standard for the quantification of the analyte in milk samples using analytical and microbiological assay technique. Biochem/physiol Actions Sulfonamide antibiotic that blocks the synthesis of dihydrofolic acid by inhibiting the enzyme dihydropteroate synthase. Mode of Action: Inhibits folic acid synthesis in prokaryotes. Anti-microbial Spectrum: Gram positive, Gram negative, Chlamydia Mode of Resistance: Alteration of dihydropteroate synthase or alternative pathway for folic acid synthesis.