3-Chloro-6-cyano-4-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Bromo-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-4-methanol
4-Bromo-3-(chloromethyl)-2-(trifluoromethoxy)pyridine-5-acetic acid
5-Chloro-2-cyano-3-(trifluoromethoxy)pyridine-4-carboxylic acid