title: Separation of five major alkaloids in gum opium and quantitation of morphine, codeine, and thebaine by isocratic reverse phase high performance liquid chromatography.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation; D003061:Codeine / Q000032:analysis*; D008722:Methods; D008832:Microchemistry; D009020:Morphine / Q000032:analysis*; D009892:Opium; D013797:Thebaine / Q000032:analysis*
chemical_list: D013797:Thebaine; D009020:Morphine; D009892:Opium; D003061:Codeine