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