title: Quantitative determination of morphine in poppy capsules by differential spectrophotometry.
mesh_terms: D000470:Alkaloids / Q000302:isolation & purification; D002855:Chromatography, Thin Layer; D006851:Hydrochloric Acid; D006878:Hydroxides; D008722:Methods; D009020:Morphine / Q000032:analysis*; D010207:Papaver / Q000032:analysis*; D010710:Phosphates; D010946:Plants, Medicinal; D000644:Quaternary Ammonium Compounds; D012972:Sodium Hydroxide; D013056:Spectrophotometry, Ultraviolet; D013223:Statistics as Topic
chemical_list: D000470:Alkaloids; D006878:Hydroxides; D010710:Phosphates; D000644:Quaternary Ammonium Compounds; D012972:Sodium Hydroxide; D009020:Morphine; D006851:Hydrochloric Acid