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On-line column coupled isotachophoresis-capillary zone electrophoresis hyphenated with tandem mass spectrometry in drug analysis: Varenicline and its metabolite in human urine

Human UrineCapillary ElectrophoresisBiochemistryGas ChromatographyMedicineDrug PurityBioanalysisMass SpectrometryTandem Mass SpectrometryAnalytical ChemistryLiquid ChromatographyMetabolomicsPharmacologyIsotachophoresisChromatographyDrug Analysis