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