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