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Determination and pharmacokinetics of periplocin in rat plasma by LC-MS
Lixin Yi1, Kaishun Bi, Xinyang Chen
1School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning 110016, People's Republic of China.
Abstract:
A simple and sensitive LC-MS method for the determination of periplocin in rat plasma was developed and validated. The chromatographic separation was carried out using a reverse-phase Kromasil C(18) column(150 × 4.6 mm, i.d., 5 µm) with a mobile phase composed of methanol-water (76:24, v/v). The flow rate of mobile phase was 0.8 mL/min. The calibration curve was linear within the concentration range 1-1000 ng/mL. The intra- and inter-day precisions across three validation days over the entire concentration range was lower than 9.2% in terms of relative standard deviation. Accuracy determined at three quality control concentrations ranged from -2.0 to 6.0% in terms of relative error. The validated method was applied to the pharmacokinetic study of periplocin in rat plasma after intravenous and intramuscular administration.
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