Quantitative determination of E- and Z-doxepin and E- and Z-desmethyldoxepin by high-performance liquid chromatography.
M Adamczyk, J R Fishpaugh, C Harrington
Index: Ther. Drug Monit. 17(4) , 371-6, (1995)
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Abstract
A high-performance liquid chromatographic (HPLC) method was developed for the quantitative, simultaneous determination of the following four compounds in serum: E-doxepin, Z-doxepin, E-desmethyldoxepin, and Z-desmethyldoxepin. A 3-microns analytical silica column (6 x 100 mm) was employed with the mobile phase 0.025 M phosphate:acetonitrile:n-nonylamine (80:20:1). This HPLC method allows for the accurate measurement of all four isomeric compounds.
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