Research letter2,7-diamino-3,8-dimethylphenazine (cas 107564-21-6) as the major mutagenic product from the reaction of 2,4-diaminotoluene with hydrogen peroxide

Add time:08/15/2019    Source:sciencedirect.com

The mutagenicity of 2,4-diaminotoluene (DAT) in Ames's Salmonella/microsome test was remarkably enhanced by treatment with hydrogen peroxide. Therefore, identification of the major mutagenic reaction product of 2,4-DAT with hydrogen peroxide at room temperature has been performed. Red precipitates were produced in a 2-day reaction mixture and were column chromatographed on silica gel. 5 fractions having mutagenic potency were obtained. The red crystalline needles, obtained as the major reaction product, were separated from fraction 2 and were subjected to high resolution mass spectrometry, 1H- and 13C-NMR spectrometry. The structure of the compound was determined to be 2,7-diamino-3,8-dimethylphenazine from physicochemical and chemical evidence. The compound induced 212 revertants/nmole in Salmonella typhimurium TA98 with 25 μl S9 per plate.

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