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High-performance liquid chromatographic determination of morphine and its 3- and 6-glucuronide metabolites by two-step solid-phase extraction

Medicinal ChemistryChemical MeasurementBiochemistryGas ChromatographyMedicineNatural SciencesBioanalysisMass SpectrometryDrug PurityTwo-step Solid-phase ExtractionAnalytical ChemistryLiquid ChromatographyClinical Chemistry6-Glucuronide MetabolitesChromatographic AnalysisPharmacologyChromatographyDrug Analysis