Bethanechol and HPTA (2-Hydroxy-Propyl-Trimethyl Ammonium) besides Sodium and Calcium (Metrosep C 6 - 250/4.0)

Bethanechol is a pharmaceutical compound which is used to treat urinary retention. This application note describes the determination of this by cation chromatography with direct conductivity detection. Results demonstrate that bethanechol is well separated from its degradation product 2-hydroxypropyltrimethyl ammonium (HTPA) and the standard cations.