Abstract
Abstract Nine β-blocking agents have been tested and dosed by high performance liquid chromatography. Six of them, acebutolol an acebutolol metabolite, atenolol, metoprolol, propranolol and sotalol are detected with a fluorometric detector. Oxprenolol, pindolol and timolol can be quantified by their UV absorption at variable wavelength. A method is developped to find the best conditions of extraction and detection for each blocking agent. Experimental trials have led to a simple procedure for all compounds. Only pindolol and timolol plasma levels are non suitable for high performance liquid chromatography and need mass fragmentography or gas chromatography with electron capture detection. However, pharmacokinetic parameters can be reached, for timolol and pindolol, through urinary excretion since sensitivity of the procedure is within the range of urinary levels. The method has been applied, as well, to pharmacokinetic studies on sotalol, acebutolol, acebutolol metabolite, atenolol, propranolol, pindolol ...
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