Ethyl 3-(difluoromethyl)-2-fluoro-4-(trifluoromethoxy)pyridine-5-carboxylate
5-Iodo-4-nitro-2-(trifluoromethoxy)pyridine-3-carbonyl chloride
3-Iodo-4-nitro-5-(trifluoromethoxy)pyridine-2-carbonyl chloride
3-Iodo-2-nitro-6-(trifluoromethoxy)pyridine-5-carbonyl chloride