TCH346 (dibenzo[b,f]oxepin-10-ylmethyl-prop-2-ynylamine) is a novel propargylamine compound under investigation as a putative agent in the treatment of chronic neurodegenerative illnesses. To support clinical studies an analytical method was developed for TCH346 plus its three amine metabolites and a carboxylic acid metabolite in human plasma. Using a two-step liquid-liquid extraction, one under acidic and one under basic conditions, by pH-switching both the basic and acidic analytes were extracted from 0.
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