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