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