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