Ethyl 3-iodo-4-nitro-2-(trifluoromethoxy)pyridine-5-acetate
Ethyl 3-iodo-2-nitro-5-(trifluoromethoxy)pyridine-6-acetate
Ethyl 2-iodo-5-methyl-3-(trifluoromethoxy)pyridine-4-acetate
Ethyl 2-iodo-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-5-acetate