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