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• W2943473931 abstract "A rapid, reliable, and sensitive HPLC-electrospray ionization-tandem mass spectrometry (HPLC-MS/MS) method was established and validated for simultaneous determination of militarine and its three metabolites (gastrodin, α -isobutylmalic acid, and gymnoside I) in rat plasma. Plasma was acidified with formic acid, and protein was precipitated with methanol. MS/MS with ESI and multiple reaction monitoring at m/z 725.3→457.3, 457.1→127, 304.3→107.2, 189→129, and 417.1→267.1 was used for determination of militarine, gastrodin, α -isobutylmalic acid, gymnoside I, and puerarin (internal standard), respectively. Chromatographic separation was conducted using an ACE UltraCore SuperC18 (2.1 × 100 mm, 2.5 μ m) column with gradient mobile phase (0.1% formic acid in water and acetonitrile). The lower limits of quantitation for militarine, gastrodin, α -isobutylmalic acid, and gymnoside I were 1.02, 2.96, 1.64, and 0.3 ng/mL, respectively. The relative standard deviations of intra- and interday measurements were less than 15%, and the method accuracy ranged from 87.4% to 112.5%. The extraction recovery was 83.52%-105.34%, and no matrix effect was observed. The three metabolites (gastrodin, α -isobutylmalic acid, and gymnoside I) were synchronously detected at 0.83 h, suggesting that militarine was rapidly transformed to gastrodin, α -isobutylmalic acid, and gymnoside I. Moreover, the area under the curve (AUC) and <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M1><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>C</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant=normal>m</mml:mi><mml:mi mathvariant=normal>a</mml:mi><mml:mi mathvariant=normal>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math> of militarine were significantly lower than those of gastrodin and α -isobutylmalic acid, showing that militarine was largely metabolized to gastrodin and α -isobutylmalic acid in vivo . The studies on pharmacokinetics of militarine and its three metabolites were of great use for facilitating the clinical application of militarine and were also highly meaningful for the potential development of militarine." @default.
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• W2943473931 date "2019-05-02" @default.
• W2943473931 modified "2023-10-15" @default.
• W2943473931 title "A Validated HPLC-MS/MS Method for Simultaneous Determination of Militarine and Its Three Metabolites in Rat Plasma: Application to a Pharmacokinetic Study" @default.
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• W2943473931 doi "https://doi.org/10.1155/2019/2371784" @default.
• W2943473931 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6521569" @default.
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