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