Simultaneous Determination of Phillyrin and Forsythiaside in Beagle Dog Plasma by High-Performance Liquid Chromatography with Gradient Elution and Its Application to Pharmacokinetic Studies

2010 ◽  
Vol 43 (2) ◽  
pp. 209-218 ◽  
Author(s):  
Li Yun-Xia ◽  
Peng Cheng ◽  
Zhang Ruo-Qi ◽  
Li Xue ◽  
Jiang Xue-Hua
2012 ◽  
Vol 57 (1) ◽  
pp. 484-489 ◽  
Author(s):  
Mei Zhang ◽  
Grant A. Moore ◽  
Murray L. Barclay ◽  
Evan J. Begg

ABSTRACTA rapid and simple high-performance liquid chromatography (HPLC) assay was developed for the simultaneous determination of three triazole antifungals (voriconazole, posaconazole, and itraconazole and the metabolite of itraconazole, hydroxyitraconazole) in human plasma. Sample preparation involved a simple one-step protein precipitation with 1.0 M perchloric acid and methanol. After centrifugation, the supernatant was injected directly into the HPLC system. Voriconazole, posaconazole, itraconazole, its metabolite hydroxyitraconazole, and the internal standard naproxen were resolved on a C6-phenyl column using gradient elution of 0.01 M phosphate buffer, pH 3.5, and acetonitrile and detected with UV detection at 262 nm. Standard curves were linear over the concentration range of 0.05 to 10 mg/liter (r2> 0.99). Bias was <8.0% from 0.05 to 10 mg/liter, intra- and interday coefficients of variation (imprecision) were <10%, and the limit of quantification was 0.05 mg/liter.


2020 ◽  
Vol 17 (1) ◽  
pp. 149-158
Author(s):  
Yang Xu ◽  
Huailei Yang ◽  
Baiyu Shan ◽  
Kuo Fang ◽  
Mingyu Li ◽  
...  

Background: Desheng pills (DSP) consist of six traditional Chinese medicine. This preparation is used fornourishing blood, eliminating stasis, soothing liver and regulating menstruation, and can also be used to treat menoxenia and dysmenorrhea caus ed by qi stagnation and blood stasis. Objective: In this paper, an accurate and sensitive high-performance liquid chromatography-diode array detector (HPLC-DAD) method was developed and validated for simultaneous determination of seven active components (gallic acid, paeoniflorin, costunolide, dehydrocostuslactone, rutin, leonurine hydrochloride and ferulic acid) in the traditional Chinese formula-Desheng pills. Methods: The seven analytes were separated on Agilent ZORBAX SB-C18 column (250mm× 4.6mm, 5μm) maintained at the temperature of 30.. Gradient elution was performed with the mobile phase of methanol (A)-0.1% phosphoric acid solution (B) at the flow rate of 1.0mL·min-1. The analysis was carried out at the wavelength of 225 nm, 256 nm, 277 nm and 320 nm with an injection volume of 10 μL. Results: The measured seven components showed good linear relationships within their own concentration ranges along with coefficients of determination ≥0.9996. The limits of detection and quantitation of all analytes were in the range of 0.19-13.51 μg/mL and 0.59-40.93 μg/mL, respectively. Average recoveries ranged from 98.82% to 102.01% with RSDs of 1.47%-1.99%. The content of tested components was in the range of 0.053-0.421 mg/g. Conclusion: The proposed method was found to be sensitive, accurate and reproducible, which provided an effective quantitative analytical method for quality control of Desheng pills.


Sign in / Sign up

Export Citation Format

Share Document