title: Reversed-phase column chromatography of organic ammonium compounds as ion pairs. II. Application to preparative separation of emepronium and its ring-substituted chloro-analogues.
mesh_terms: D001965:Bromides; D002712:Chlorides; D002845:Chromatography; D008722:Methods; D000439:Pentanols; D000644:Quaternary Ammonium Compounds / Q000302:isolation & purification*
chemical_list: D001965:Bromides; D002712:Chlorides; D000439:Pentanols; D000644:Quaternary Ammonium Compounds