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