Fig. 2From: Use of thin-layer chromatography to detect counterfeit sulfadoxine/pyrimethamine tablets with the wrong active ingredient in MalawiTLC analysis of Novidar (SP)™ tablets (labled as N) and of the falsified samples type X and type Y (labeled as X and Y). a Comparison to an authentic standard of sulfadoxine 500 mg/pyrimethamine 25 mg (S) and to an authentic standard containing only 80 % of these amounts (s). b–d Comparison to paracetamol 500 mg (P) and co-trimoxaxole 480 mg (C), using different TLC solvent systemsBack to article page