A rapid chromatographic assay of acetylsalicylic acid, acetophenetidin, and caffeine.
D001241:Aspirin / Q000032:analysis*; D001681:Biological Assay; D002110:Caffeine / Q000032:analysis*; D002845:Chromatography; D010615:Phenacetin / Q000032:analysis*
D002110:Caffeine; D010615:Phenacetin; D001241:Aspirin
ACETOPHENETIDIN/determination; ACETYLSALICYLIC ACID/determination; CAFFEINE/determination