Ethyl 3-bromo-2-cyano-5-(trifluoromethoxy)pyridine-4-acetate
Ethyl 3-bromo-2-cyano-4-(trifluoromethoxy)pyridine-6-acetate
Ethyl 3-bromo-2-cyano-4-(trifluoromethoxy)pyridine-5-acetate
Ethyl 6-bromo-2-cyano-3-(trifluoromethoxy)pyridine-4-acetate
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