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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Simultaneous determination of lithospermic acid B and its three metabolites by liquid chromatography/tandem mass spectrometry.

A rapid and sensitive method based on liquid chromatography/tandem mass spectrometry (LC/MS/MS) was developed for the simultaneous determination of lithospermic acid B and its three main O-methylated metabolites in rat serum with silibinin as the internal standard. The calibration curves for LSB, and the three metabolites were linear over the ranges of 16-4096, and 8-2048ng/ml, respectively, with coefficients of correlation >0.998. For LSB, the intra-assay coefficient of variance (CV) was less than 9.3% and the inter-assay CV was less than 8.9%. The inter-assay mean accuracy was between 92.8% and 104.7%. For the three metabolites, the intra-assay CV was less than 8.7% and the inter-assay CV was less than 9.9%. The inter-assay mean accuracy was between 92.5% and 107.9%. This quantitation method was successfully applied to a pharmacokinetic study of LSB in rats. Also, a total recovery of 5.2%was found in bile after oral administration.[1]

References

  1. Simultaneous determination of lithospermic acid B and its three metabolites by liquid chromatography/tandem mass spectrometry. Li, X., Yu, C., Wang, L., Lu, Y., Wang, W., Xuan, L., Wang, Y. Journal of pharmaceutical and biomedical analysis (2007) [Pubmed]
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