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