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