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Quantitative determination of glycopyrrolate in human plasma by liquid chromatography–electrospray ionization mass spectrometry: The use of a volatile ion-pairing agent during both liquid–liquid extraction and liquid chromatography

Analytical InstrumentationBiochemistryMedicineMass SpectrometryHuman PlasmaAnalytical ChemistryVolatile Ion-pairing AgentLiquid ChromatographyChromatographic AnalysisPharmacologyChromatographyDrug Analysis