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