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