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Medical Dictionary

prontosil

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noun pron·to·sil \ˈprän-tə-ˌsil\

Medical Definition of prontosil

: any of three sulfonamide drugs:a: a red azo dye C₁₂H₁₃N₅O₂S that was the first sulfa drug tested clinically—called also prontosil rubrumb: sulfanilamidec: azosulfamide

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