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