Sulfacetamide

Sulfacetamide (CAS No.: 144-80-9) is a sulfonamide-class small molecule widely utilized in biomedical research as an inhibitor of bacterial folate biosynthesis, primarily targeting dihydropteroate synthase (DHPS) and thereby disrupting the production of dihydrofolic acid and downstream folate-dependent metabolic pathways. By competitively interfering with para-aminobenzoic acid utilization, Sulfacetamide suppresses bacterial proliferation and exhibits broad-spectrum activity against both Gram-positive and Gram-negative microorganisms, with in vitro inhibitory effects generally observed in the low micromolar range. In addition to its antibacterial properties, it has been reported to display antifungal activity in certain experimental contexts. This compound is frequently employed in cell-based assays and microbial culture systems to investigate mechanisms of antimicrobial resistance, folate metabolism, and pathogen-host interactions, as well as in animal models designed to evaluate infection dynamics and pharmacological responses. Its utility extends to screening platforms aimed at identifying synergistic or resistance-modulating agents targeting folate pathways. Experimental concentrations and dosing regimens vary depending on specific study designs, model systems, and research objectives.