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