title: Gas chromatographic analysis of acetylsalicylic acid, phenacetin, caffeine, and codeine in APC and codeine tablets.
mesh_terms: D001241:Aspirin / Q000032:analysis*; D002110:Caffeine / Q000032:analysis*; D002849:Chromatography, Gas; D003061:Codeine / Q000032:analysis*; D008722:Methods; D010615:Phenacetin / Q000032:analysis*; D013607:Tablets
chemical_list: D013607:Tablets; D002110:Caffeine; D010615:Phenacetin; D001241:Aspirin; D003061:Codeine