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