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Solid-phase extraction and liquid chromatographic quantitation of the antiarrhythmic drug L-768673 in a microemulsion
R R Kenney1, R J Forsyth, H Jahansouz
1Pharmaceutical Research and Development Department, Merck Research Laboratories, West Point, Pa 19486, USA.
Journal of Pharmaceutical and Biomedical Analysis
|July 31, 1998
Abstract:
A sensitive and specific method based in solid-phase extraction and reverse-phase liquid chromatography was developed and validated for the quantitation of L-768673 in a microemulsion formulation. Following a water wash, the drug was eluted from the extraction column with acetonitrile and was analyzed on a reverse-phase C18 column with UV detection at 245 nm. The mobile phase consisted of acetonitrile-0.2% trifluoroacetic acid, 0.1% triethylamine (53:47 v/v). The retention time L-768673 was approximately 28 min with a flow rate of 1.5 ml min-1.