title: Purity profiles for heroin, morphine, and morphine hydrochloride.
mesh_terms: D002151:Calorimetry; D002712:Chlorides / Q000032:analysis; D002845:Chromatography; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D003932:Heroin / Q000032:analysis* / Q000138:chemical synthesis; D008722:Methods; D009020:Morphine / Q000032:analysis*; D011199:Potentiometry; D012995:Solubility; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D014867:Water / Q000032:analysis
chemical_list: D002712:Chlorides; D014867:Water; D003932:Heroin; D009020:Morphine