Metabolism of substituted diphenylether herbicides in plants. II. Identification of a new FLUORODIFEN (cas 15457-05-3) metabolite, S-(2-nitro-4-trifluoromethylphenyl)-glutathione in peanut
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Add time:08/23/2019 Source:sciencedirect.com
The herbicide, 2,4′-dinitro-4-trifluoromethyl diphenylether (FLUORODIFEN (cas 15457-05-3)), is eleaved in peanut to give the metabolite, S-(2-nitro-4-trifluoromethylphenyl)-glutathione. A comparison of the glutathione conjugate isolated from treated peanut leaves and from in vitro pea epicotyl glutathione S-transferase reaction showed that both metabolites were identical. Other polar metabolites were also isolated, but not identified. The structure of the glutathione conjugate was confirmed by amino acid analysis and by mass, NMR, and infrared spectroscopy. The p-nitrophenyl moiety is also conjugated to natural products and is released as the free p-nitrophenol upon acid hydrolysis.
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