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