Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7615066 | Journal of Chromatography B | 2018 | 30 Pages |
Abstract
A reliable liquid chromatography/tandem mass (LC-MS/MS) method was developed for quantitation of 3â², 4â²-dimethoxy flavonol-3-β-d-glucopyranoside (DF3G) in rat plasma using pantoprazole as the internal standard. An Agilent C18 column (100â¯mmâ¯Ãâ¯3â¯mm, 3.5â¯Î¼m) was performed for chromatographic separation with the mobile phase composed of methanol-water (containing formic acid) at a flow rate of 0.4â¯mL/min. A triple-quadrupole mass spectrometry equipped with an electrospray ionization (ESI) source in positive ion mode was applied to quantitative analysis by multiple reacting monitoring (MRM). The MRM precursor-product ion transition of DF3G and Pantoprazole (IS) were m/z 461.1â¯ââ¯299.2 and 383.9â¯ââ¯200.2, respectively. Calibration curves were recovered in a concentration range of 1-500â¯ng/mL for plasma with a limit of lower quantification (LLOQ) of 1â¯ng/mL. The intra-day and inter-day precision were not >10%. The accuracy of DF3G ranged from â10% to 0.53% in quality control (QC) samples at three concentrations. DF3G was not degraded during the analysis and the storage period. All the data were validated in accordance with the FDA bioanalytical method validation guideline. The LC-MS/MS method was successfully employed in the pharmacokinetic study of the DF3G after oral administration and intravenous injection in rats.
Keywords
LQCMQCLLOQESIHQCMRMRSDLC-MS/MSinternal standardrelative standard deviationstandard deviationlower limit of quantificationrelative error96-Well formatFlavonoidsPharmacokinetic studymultiple reaction monitoringLiquid chromatography/tandem mass spectrometryhigh performance liquid chromatographyHPLChigh quality controlquality control
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Qiong Lou, Jun Wen, Yuanying Jiang, Jinghua Huang, Guorong Fan, Fenyun Song,