Ethyl 3-bromo-2-iodo-5-(trifluoromethoxy)pyridine-4-carboxylate
3-Bromo-5-(difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine
3-Bromo-2-(difluoromethyl)-6-nitro-4-(trifluoromethoxy)pyridine
2-Bromo-6-(difluoromethyl)-3-nitro-5-(trifluoromethoxy)pyridine