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