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