spasmex

No abstract text is available yet for this article.

No abstract text is available yet for this article.

No abstract text is available yet for this article.

No abstract text is available yet for this article.

For the quaternary compound trospium chloride (Spasmex) which is used as an anticholinergic agent a new sensitive assay method has been developed that allows the quantitative determination of the drug in human urine and plasma. Using this method it was possible to obtain pharmacokinetic data from plasma levels and urinary excretion, and to determine the bioavailability in man. Quantitative determination is performed by alkaline hydrolysis to the corresponding spiroalcohol, ion-pair extraction with dipicrylamine, subsequent derivatization with the fluorophor benoxaprofen chloride, and ion-pair chromatographic separation on a reversed-phase column with chloride as the counter-ion using a mixture of acetonitrile and water...

Lipophilic ion pairs of trospium chloride (Spasmex) were synthesized and the transfer rates of the parent drug and the derivatives across everted rat intestine and human abdominal epidermis were measured. It was evaluated whether there is a correlation between membrane permeation and hydrophilic/lipophilic balance. With some ion pairs of trospium, enhanced transport rates in both models could be found.