Ethyl 2-(difluoromethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 4-iodo-2-methyl-5-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 3-iodo-6-nitro-2-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 2-(difluoromethyl)-4-hydroxy-6-(trifluoromethoxy)pyridine-3-carboxylate