title: Simple gas-liquid chromatographic method for confirming the presence of alkaloids in urine.
mesh_terms: D000433:1-Propanol; D002725:Chloroform; D002849:Chromatography, Gas; D003042:Cocaine / Q000652:urine*; D003061:Codeine / Q000652:urine*; D008691:Methadone / Q000652:urine*; D008722:Methods; D009020:Morphine / Q000652:urine*; D012995:Solubility
chemical_list: D009020:Morphine; D002725:Chloroform; D000433:1-Propanol; D003042:Cocaine; D008691:Methadone; D003061:Codeine