Liquid Chromatography-Tandem Mass Spectrometry Method for the Determination of Vardenafil and Its Application of Bioequivalence

Autor: Mohd Izwan Mohamad Yusof, Zamri Chik, Riyanto Teguh Widodo, M. S. Rofiee, Lay Kek Teh, Kok Zheng Gan
Rok vydání: 2021
Předmět:
Zdroj: International Journal of Analytical Chemistry
International Journal of Analytical Chemistry, Vol 2021 (2021)
ISSN: 1687-8779
1687-8760
DOI: 10.1155/2021/5590594
Popis: A simple, rapid, and sensitive method of liquid chromatography-tandem mass spectrometry (LC/MS/MS) method was developed and validated for the determination of vardenafil in rabbit plasma. A simple protein precipitation method with ice-cold acetonitrile was used for plasma extraction. The mass transitions m/z 489⟶151 and m/z 390⟶169 were used to measure vardenafil and tadalafil (internal standard), respectively, with a total assay run time of 6 min. The limit of detection was 0.2 ng/mL. The assay was reproducible with intra-assay and interassay precision ranging 1.17%–9.17% and 1.31%–5.86%, respectively. There was also good intra-assay and interassay accuracy between 89.3%–105.3% and 94%–102% of the expected value, respectively. The linearity range was 0.5–60 ng/mL in rabbit plasma ( r 2 ≥ 0.99). The measured AUC from 0 to 24 h AUC 0 − 24 t for the test and reference formulations were 174.38 ± 95.91 and 176.45 ± 76.88, respectively. For the test, C max and T max were 75.36 ± 59.53 ng/mL and 1.42 ± 0.19 h, whereas, for the reference, these were 58.22 ± 36.11 ng/mL and 2.04 ± 0.33 h, respectively. The test formulation achieved a slightly lower AUC 0 − 24 t value ( p > 0.05), higher C max values ( p > 0.05), faster T max ( p
Databáze: OpenAIRE
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