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