3,4-Bis(trifluoromethyl)-2-(trifluoromethylthio)pyridine
2,4-Bis(trifluoromethyl)-5-(trifluoromethylthio)pyridine
2-Fluoro-6-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-carboxylic acid
2-Fluoro-5-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-carboxylic acid