Ethyl 6-fluoro-4-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 2-(difluoromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 2-bromo-6-chloro-3-(difluoromethyl)pyridine-5-acetate
Ethyl 2,4-bis(trifluoromethyl)pyridine-6-acetate