title: A rapid method of thin-layer chromatography to aid the identification of quaternary nitrogen drugs.
mesh_terms: D001322:Autoanalysis; D002855:Chromatography, Thin Layer; D006584:Hexamethonium Compounds; D008722:Methods; D008832:Microchemistry; D009294:Narcotics / Q000032:analysis; D009861:Onium Compounds; D011726:Pyridinium Compounds; D000644:Quaternary Ammonium Compounds; D012997:Solvents
chemical_list: D006584:Hexamethonium Compounds; D009294:Narcotics; D009861:Onium Compounds; D011726:Pyridinium Compounds; D000644:Quaternary Ammonium Compounds; D012997:Solvents