Abstract
A liquid chromatographic method for the determination of lidocaine (LID), prilocaine (PRL) and their impurities 2,6-dimethylaniline (DMA) and o-toluidine (TOL) has been developed. The analysis was performed on a reversed phase C18 Hypersil BDS column at ambient temperature. A mobile phase consisting of Briton-Robinson buffer, pH 7—methanol—acetonitrile (40: 45: 15 v/v/v) was used at a flow rate of 1.2 mL min−1. Detection was achieved at 225 nm using benzophenone as internal standard over the concentration range 1.25–80 μg mL−1 for all analytes. The relative standard deviations RSD (n = 7) for the assay were less than 0.95%. Limit of detection values were found to be 0.346, 0.423, 0.112 and 0.241 μg mL−1 for LID, PRL, DMA and TOL, respectively. The intraday and the inter-days RSD % indicated the precision of the procedure. The method proved to be suitable for the quality control of LID and PRL in pharmaceuticals.
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An erratum to this article can be found at http://dx.doi.org/10.1365/s10337-009-1274-x
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Mohammad, M.AA. LC Determination of Lidocaine and Prilocaine Containing Potential Risky Impurities and Application to Pharmaceuticals. Chroma 70, 563–568 (2009). https://doi.org/10.1365/s10337-009-1173-1
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DOI: https://doi.org/10.1365/s10337-009-1173-1
Keywords
- Column liquid chromatography
- Pharmaceutical study
- Lidocaine
- Prilocaine and impurities