Ethyl 3-bromo-5-(chloromethyl)-6-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 3-bromo-5-methoxy-2-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 3-bromo-4-(chloromethyl)-6-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 5-bromo-4-methoxy-3-(trifluoromethoxy)pyridine-2-carboxylate