title: Application of directly coupled HPLC-NMR-MS/MS to the identification of metabolites of 5-trifluoromethylpyridone (2-hydroxy-5-trifluoromethylpyridine) in hydroponically grown plants.
abstract: Directly coupled HPLC-NMR-MS was used to characterize two major metabolites of 5-trifluoromethylpyridone (2-hydroxy-5-trifluoromethylpyridine), a model compound for herbicides, after it had been dosed into hydroponically grown maize plants. The combination of NMR and MS data allowed the identification of both of these metabolites, namely, the N-glucoside and O-malonylglucoside conjugates of the parent pyridone. This work demonstrates the efficiency and the potential application of HPLC-NMR-MS to the investigation of the metabolism of agrochemicals. The work also indicates that combination of the use of hydroponically grown plants and directly coupled HPLC-NMR-MS allows rapid identification of metabolites with little sample preparation.
authors.affiliation: Biological Chemistry, Biomedical Sciences Division, Imperial College of Science, Technology and Medicine, Sir Alexander Fleming Building, South Kensington, London SW7 2AZ, United Kingdom.
authors.forename: N J
authors.initials: NJ
authors.lastname: Bailey
authors.forename: P
authors.initials: P
authors.lastname: Cooper
authors.forename: S T
authors.initials: ST
authors.lastname: Hadfield
authors.forename: E M
authors.initials: EM
authors.lastname: Lenz
authors.forename: J C
authors.initials: JC
authors.lastname: Lindon
authors.forename: J K
authors.initials: JK
authors.lastname: Nicholson
authors.forename: P D
authors.initials: PD
authors.lastname: Stanley
authors.forename: I D
authors.initials: ID
authors.lastname: Wilson
authors.forename: B
authors.initials: B
authors.lastname: Wright
authors.forename: S D
authors.initials: SD
authors.lastname: Taylor
mesh_terms: D002851:Chromatography, High Pressure Liquid; D006031:Glycosylation; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010944:Plants / Q000737:chemistry*; D011725:Pyridines / Q000032:analysis*
chemical_list: D011725:Pyridines; C404282:2-hydroxy-5-(trifluoromethyl)pyridine