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