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