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In order to evaluate the pharmacokinetics characteristic of antazoline hydrochloride in Beagle dogs, a sensitive and specific HPLC method was developed and validated using phenacetin as the internal standard (IS). The analyte and the IS were extracted from dog plasma by ethyl acetate under the basic condition. The analyte was separated by a C18 column and(More)
A reversed-phase ion pair chromatography method with liquid-liquid extraction analytical method was developed and validated for the determination of antazoline hydrochloride in plasma and excreta of rat. The aim of our study was to characterize the preclinical pharmacokinetics and excretion profiles of antazoline hydrochloride in rats after intravenous(More)
A highly specific and sensitive liquid chromatography-tandem mass spectrometry method has been developed and validated for the determination of ponicidin in dog plasma. The plasma samples were prepared using liquid-liquid extraction with ethyl acetate as the extraction solvent. Chromatographic separation was accomplished on a Waters XTerra MS C18 column.(More)
A sensitive and simple liquid chromatography -: electrospray ionization mass spectrometry method has been established and validated for the quantification of Guanfu base G in rats. Phenoprolamine hydrochloride was selected as the internal standard. Sample preparation involved simple liquid-liquid extraction by ethylacetate with high efficiency. The(More)
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