title: TLC detection of caffeine in commercial products.
mesh_terms: D001241:Aspirin / Q000032:analysis; D002110:Caffeine / Q000302:isolation & purification*; D002855:Chromatography, Thin Layer; D008722:Methods; D012997:Solvents
chemical_list: D012997:Solvents; D002110:Caffeine; D001241:Aspirin