Ethyl 4-(fluoromethyl)-5-methoxy-3-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 4-(fluoromethyl)-3-methoxy-2-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 5-(fluoromethyl)-3-methoxy-4-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 3-(fluoromethyl)-5-methoxy-2-(trifluoromethoxy)pyridine-4-carboxylate