Ethyl 6-(difluoromethyl)-3-iodo-2-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 2-(difluoromethyl)-3-iodo-4-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 4-(difluoromethyl)-2-iodo-6-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 4-(difluoromethyl)-2-iodo-3-(trifluoromethoxy)pyridine-6-carboxylate