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The structural elucidation of the metabolites of phencynonate and its analogue thiencynonate in rats was performed by liquid chromatography–electrospray ionization tandem mass spectrometry (LC–ESI-MS n ) in positive ion mode, by comparing their changes in molecular masses (ΔM), retention times and spectral patterns with those of the parent drug. Phencynonate and thiencynonate were easily biotransformed...
A sensitive and specific high-performance liquid chromatography–tandem mass spectrometry method (LC/ESI/MS) was developed and validated for the identification and quantification of the novel lead compound of anticholinergic drug thiencynonate in rat plasma. The analytes were determined using positive electrospray ionization mass spectrometry in the selected reaction ion monitoring (SRM). The chromatography...
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