Ethyl 6-bromo-2-nitro-3-(trifluoromethoxy)pyridine-4-carboxylate
2-Bromo-3-(chloromethyl)-6-iodo-4-(trifluoromethoxy)pyridine
Ethyl 2-bromo-6-nitro-4-(trifluoromethoxy)pyridine-3-carboxylate
2-Bromo-3-(chloromethyl)-4-iodo-6-(trifluoromethoxy)pyridine