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