Abstract
The qualitative and quantitative determination of metapramine and its metabolites, after selective solvent extraction from biological materials, are achieved by gas-liquid chromatography with or without an internal standard, carried out directly or after derivatization, spectrofluorimetry and one- or two-dimensional thin-layer chromatography. The gas chromatographic procedures are the most sensitive for the quantitative determination of the unchanged compound: 15 and 35 ng/ml in plasma and 5 and 10 ng/ml in urine; the detection limit for thin-layer chromatography is about 100 ng. These techniques can be used for pharmacokinetic studies and therapeutic controls, and also in analytical toxicology.
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