Ethyl 3-(difluoromethyl)-2-hydroxy-4-(trifluoromethoxy)pyridine-6-acetate
Methyl 4-iodo-2-nitro-3-(trifluoromethoxy)pyridine-6-acetate
Ethyl 2-(difluoromethyl)-6-hydroxy-4-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 3-iodo-5-nitro-6-(trifluoromethoxy)pyridine-2-acetate