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