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