Structural characterization of [14C]propargite metabolites in goat urine by high-resolution FT-NMR and mass spectrometry

Urinary metabolites of [phenyl-U-14C]propargite, 2-[4-(1,1-dimethylethyl)phenoxy]cyclohexyl-2-propynyl sulfite, a nonsystemic acaricide, in a lactating goat were identified. The goat received three consecutive daily doses equivalent to 340 ppm of propargite in the daily diet. The animal was sacrific...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 1991-03, Vol.39 (3), p.594-599
Main Authors: Banijamali, Ali R, Burger, Robert N, Nitowski, Albert J, Putterman, Gerald J
Format: Article
Language:English
Subjects:
ACARICIDAS
ACARICIDE
Biological and medical sciences
CAPRIN
CAPRINOS
ESPECTROMETRIA
Medical sciences
METABOLITE
METABOLITOS
ORINA
PESTICIDE
Pesticides, fertilizers and other agrochemicals toxicology
PLAGUICIDAS
RESIDU
RESIDUOS
SPECTROMETRIE
Toxicology
URINE
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Summary:Urinary metabolites of [phenyl-U-14C]propargite, 2-[4-(1,1-dimethylethyl)phenoxy]cyclohexyl-2-propynyl sulfite, a nonsystemic acaricide, in a lactating goat were identified. The goat received three consecutive daily doses equivalent to 340 ppm of propargite in the daily diet. The animal was sacrificed 8 h after the last dosing. A major route of elimination was found to be via the urine. Five major metabolites were isolated and characterized by FT-NMR and mass spectrometry. These compounds resulted from the hydrolysis of propynyl sulfite and subsequent hydroxylation of the tert-butyl portion of the molecule. Additional metabolites were formed by further oxidation or sulfation of the tert-butyl portion of the molecule and oxidation of the cyclohexyl moiety. The latter reaction yielded different stereoisomers with identical HPLC retention times
ISSN:0021-8561
1520-5118
DOI:10.1021/jf00003a032