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Determination of Diphenytriazol (DL111-IT) in Rabbit Plasma by High-Performance Liquid Chromatography with Fluorescence Detection

兔血浆中地非三唑(DL111-IT)高效液相色谱荧光检测方法(英文)
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摘要 Aim To develop an HPLC method with fluorescence detection for the assay ofDL111-IT in rabbit plasma. Methods DL111-IT and internal standard glybenzcyclamide in rabbit plasmawere extracted with chloroform. The determination was performed on a Diamonsil ODS-C_(18) column(150 mm x 4.6 mm, 5 μm) with a mobile phase of acetonitrile and 0.025 mol·L^(-1) diammoniumhydrogen phosphate buffer (pH 5.0, adjusted by phosphoric acid) (60:40, V/V) at a flow-rate of 1.0mL·min^(-1) . Fluorescence detector was operated at excitation wavelength of 250 nm and emissionwavelength of 332 nm. Results The calibration curve in plasma was linear from 1.00 - 20.00ng·mL^(-1) ( r = 0.999 6, n = 5). The method afforded average extracting recoveries of 85.3% ±1.3%, 84.9% ± 2.7% and 85.8% ± 1.8%, and the average method recoveries were 99.5% ±0.4%, 102.1%± 1.8% and 101.3% ± 2.4% for the high (20.00 ng·mL^(-1)) , middle (10.00 ng·mL^(-1)) and low (1.00 ng·mL^(-1)) check samples, respectively. The intra-day (n = 5) and inter-day (n = 5) precisions(RSD) were less than 3.0% and 7.0%, respectively. The limit of detection and quantitation for themethod were 0.3 ng·mL^(-1) (S/N = 3) and 1 ng·mL^(-1) (S/N = 10, RSD<7.0%) plasma sample,respectively. Conclusion The developed method was accurate, sensitive, simple and could be used forpharmacokinetic study of DL111- IT. 目的 建立兔血浆中DL111 IT的高效液相色谱荧光检测法。方法 血浆样品和内标格列本脲经氯仿提取后 ,选用DiamonsilODS C18柱 (15 0mm× 4 . 6mm ,5 μm) ,乙腈 - 0 . 0 2 5mol·L-1磷酸氢二铵缓冲溶液 (磷酸调pH 5 .0 ) (6 0 .4 0 ,V/V)为流动相 ,流速 1 0mL·min-1,荧光检测 (λex=2 5 0nm ,λem=332nm)。结果 DL111 IT在浓度 1 .0 0~ 2 0. 0 0ng·mL-1范围内呈良好线性 ,r=0. 9996 ,n =5。高 (2 0 . 0 0ng·mL-1)、中 (10 . 0 0ng·mL-1)、低 (1 .0 0ng·mL-1) 3个质控样本平均提取回收率分别为85 . 3%± 1 .3% ,84 .9%± 2 . 7% ,85 . 8%± 1 .8% ,方法回收率分别为 99 .5 %± 0 . 4 % ,10 2 . 1%± 1. 8% ,10 .1 3%± 2 .4 % ;日内(n =5 )和日间 (n =5 )RSD分别低于 3 .0 %和 7. 0 %。血浆样品检测限为 0 3ng·mL-1(S/N =3) ,定量限为 1ng·mL-1(S/N =10 ,RSD <7 .0 % )。结论 本法准确、灵敏、操作简便 ,为DL111 IT药代动力学研究提供了方法学基础。
作者 何敏 姚彤炜
出处 《Journal of Chinese Pharmaceutical Sciences》 CAS 2005年第1期56-60,共5页 中国药学(英文版)
关键词 DIPHENYTRIAZOL contragestazol DL111-IT HPLC fluorescence detection pharmaco-kinetics glybenzcyclamide 地非三唑 抗孕唑 药代动力学 格列本脲 血浆 高效液相色谱荧光
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