4-Chloro-2-hydroxy-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride
5-Bromo-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetonitrile
4-Bromo-2-(fluoromethyl)-6-(trifluoromethoxy)pyridine-3-acetonitrile
2-Bromo-4-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetonitrile