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