High pressure liquid chromatographic analysis and preliminary pharmacokinetics of sulfaphenazole and its N2-glucuronide and N4-acetyl metabolites in plasma and urine of man

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Abstract
A direct high pressure liquid chromatographic analysis of sulfaphenazole-N2-glucuronide in urine is described. After an oral dose of 439 mg of sulfaphenazole, 0% is excreted unchanged in the urine, < 1% is excreted as N4-acetylsulfaphenazole. As N2-glucuronide 49.4% is excreted in one slow acetylator and 84.8% in one fast acetylator.