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