Methyl 3-chloro-5-(fluoromethyl)-6-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 4-chloro-2-(fluoromethyl)-5-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 3-chloro-4-(fluoromethyl)-2-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 5-chloro-4-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylate