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