Yoshimura H, Endoh YS, Hamamoto K. Pharmacokinetic data of bromofenofos in calves.
ZENTRALBLATT FUR VETERINARMEDIZIN. REIHE A 1990;
37:634-6. [PMID:
2174629 DOI:
10.1111/j.1439-0442.1990.tb00955.x]
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Abstract
Bromofenofos (BF) was administered orally to six calves at a dose of 12 mg/kg and the concentrations of BF and its metabolite dephosphate bromofenofos (DBF) in plasma were determined using a high-performance liquid chromatographic method. DBF reached maximum concentration of 45.9 +/- 16.3 micrograms/ml, which occurred at 1.3 +/- 0.4 days. The elimination half life was calculated to be 1.8 +/- 0.3 days and the area under the plasma concentration versus time curve was 185.1 +/- 49.4 micrograms.day/ml. The ultrafiltrate of plasma samples revealed no free metabolite, indicating a binding of greater than 99% to plasma protein. DBF disappeared from plasma in all calves 21 days after administration. No BF was detected in plasma at any time.
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