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