High-throughput determination of carbocysteine in human plasma by liquid chromatography/tandem mass spectrometry: Application to a bioequivalence study of two formulations in healthy volunteers

Bi, H, Zhao, L, Zhong, G, Zhou, S, Li, B, Deng, Y, Chen, X and Huang, M 2006, 'High-throughput determination of carbocysteine in human plasma by liquid chromatography/tandem mass spectrometry: Application to a bioequivalence study of two formulations in healthy volunteers', Rapid Communications in Mass Spectrometry, vol. 20, no. 7, pp. 1153-1160.


Document type: Journal Article
Collection: Journal Articles

Title High-throughput determination of carbocysteine in human plasma by liquid chromatography/tandem mass spectrometry: Application to a bioequivalence study of two formulations in healthy volunteers
Author(s) Bi, H
Zhao, L
Zhong, G
Zhou, S
Li, B
Deng, Y
Chen, X
Huang, M
Year 2006
Journal name Rapid Communications in Mass Spectrometry
Volume number 20
Issue number 7
Start page 1153
End page 1160
Total pages 8
Publisher John Wiley & Sons Ltd
Abstract A rapid and sensitive liquid chromatography/tandem mass spectrometry (LC/MS/MS) method to determine carbocysteine in human plasma was developed and fully validated. After methanol-induced protein precipitation of the plasma samples, carbocysteine was subjected to LC/MS/MS analysis using electrospray ionization (ESI). The MS system was operated in the selected ion monitoring (SRM) mode. Chromatographic separation was performed on a Hypurity C 18 column (i.d. 2.1 mm x 50 mm, particle size 5 μm). The method had a chromatographic running time of 2.0 min and linear calibration curves over the concentration ranges of 0.1-20 μg/mL for carbocysteine. The lower limit of quantification (LLOQ) of the method was 0.1 μg/mL for carbocysteine. The intra- and inter-day precision was less than 7% for all quality control samples at concentrations of 0.5, 2.0, and 10.0 μg/mL. These results indicate that the method was efficient with a simple preparation procedure and a very short running time (2.0 min) for carbocysteine compared with methods reported in the literature and had high selectivity, acceptable accuracy, precision and sensitivity. The validated LC/ MS/MS method has been successfully used to a bioequivalence study of two tablet formulations of carbocysteine in healthy volunteers.
Subject Basic Pharmacology
DOI - identifier 10.1002/rcm.2422
ISSN 0951-4198
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