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