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