title: Analysis of purine and strychnos alkaloids by high-speed liquid chromatography.
mesh_terms: D002845:Chromatography; D004355:Drug Stability; D008722:Methods; D011687:Purines / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet; D013331:Strychnine / Q000032:analysis*
chemical_list: D011687:Purines; D013331:Strychnine