2-Cyano-4-hydroxy-3-(trifluoromethoxy)pyridine-6-carbonyl chloride
4-Chloro-3-nitro-6-(trifluoromethoxy)pyridine-2-carbonyl chloride
4-Chloro-3-nitro-2-(trifluoromethoxy)pyridine-5-carbonyl chloride
2-Cyano-3-hydroxy-6-(trifluoromethoxy)pyridine-5-carbonyl chloride