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논문 기본 정보

자료유형
학술저널
저자정보
Kim, Young-Hoon (Drug Metabolism and Bioanalysis Laboratory, College of Pharmacy, Wonkwang University) Ji, Hye-Young (Drug Metabolism and Bioanalysis Laboratory, College of Pharmacy, Wonkwang University) Park, Eun-Seok (College of Pharmacy, Sungkyunkwan University) Chae, Soo-Wan (Department of Pharmacology, School of Medicine, Chonbuk National University) Lee, Hye-Suk (Drug Metabolism and Bioanalysis Laboratory, College of Pharmacy, Wonkwang University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제30권 제7호
발행연도
2007.1
수록면
905 - 910 (6page)

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A rapid, sensitive and selective liquid chromatography-electrospray ionization tandem mass spectrometric (LC-ESI-MS/MS) method for the determination of lornoxicam in human plasma was developed. Lornoxicam and isoxicam (internal standard) were extracted from human plasma with ethyl acetate at acidic pH and analyzed on a Sunfire $C_{18}$ column with the mobile phase of methanol:ammonium formate (10 mM, pH 3.0) (70:30, v/v). The analyte was detected using a mass spectrometer, equipped with electrospray ion source. The instrument was set in the multiple-reaction-monitoring mode. The standard curve was linear (r = 0.9998) over the concentration range of 0.50-500 ng/mL. The coefficient of variation and relative error for intra-and inter-assay at four QC levels were 0.7 to 4.2% and 4.5 to 5.0%, respectively. The recoveries of lornoxicam and isoxicam were 87.8% and 66.5%, respectively. The lower limit of quantification for lornoxicam was 0.50 ng/mL using a $200\;{\mu}L$ plasma sample. This method was successfully applied to a pharmacokinetic study of lornoxicam after oral administration of lornoxicam (8 mg) to humans.

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