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