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