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Journal of chromatography. A

Determination of chamazulene carboxylic acid in serum by high-performance liquid chromatography. Development and validation.


PMID 16942774

Abstract

A new, simple and sensitive high-performance liquid chromatographic (HPLC) method was developed for the determination of chamazulene carboxylic acid (CCA) in serum. The technique is based on a single liquid-liquid extraction of the substance using ibuprofen as internal standard (I.S.). The separation was achieved on a C(18) reversed-phase column using acetonitrile/water (4:6, pH 3) as mobile phase. The effluent was monitored at 221 and 286 nm. The calibration curves were linear over the concentration range of 0.1-30 microg/ml. The intra- and inter-day RSDs were in all cases less than 15 and 11%, respectively. The limit of quantitation was 0.1 microg/ml. The assay was developed and validated to be applied in a pharmacokinetic study in healthy volunteers.

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