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