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