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