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