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