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