Determination of acetylsalicylic acid, acetophenetidin, and caffeine in dosage forms by nonaqueous titration.
D001241:Aspirin; D002110:Caffeine; D002626:Chemistry, Pharmaceutical; D004304:Dosage Forms; D010615:Phenacetin
D004304:Dosage Forms; D002110:Caffeine; D010615:Phenacetin; D001241:Aspirin