Dimethyldisulfanilamide (also known by the brand name Uliron) is a historical sulfonamide antibiotic introduced in 1938 by IG Farben, commonly used during the late 1930s and early 1940s to treat gonorrhea, particularly when earlier sulfonamides like Prontosil were ineffective. It was highly regarded during that period for its rapid action in treating gonorrhea and soft chancre (ulcus molle).
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