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