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