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