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