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