6-Bromo-2-hydroxy-4-(trifluoromethoxy)pyridine-3-carbonyl chloride
4-(Difluoromethyl)-3-hydroxy-5-iodopyridine-2-sulfonyl chloride
3-Cyano-2-methoxy-5-nitro-6-(trifluoromethoxy)pyridine
2-Chloro-6-(difluoromethyl)-5-(trifluoromethyl)pyridine-3-acetonitrile