6-Fluoro-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-carboxylic acid
2-Fluoro-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-carboxylic acid
4-Chloromethyl-5-iodo-2-(trifluoromethyl)pyridine
4-Chloromethyl-2-iodo-6-(trifluoromethyl)pyridine