Ethyl 4-(fluoromethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 2-hydroxy-5-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-acetate
Ethyl 4-(fluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 6-hydroxy-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-3-acetate