Methyl 5-chloro-4-hydroxy-2-(trifluoromethoxy)pyridine-3-acetate
Methyl 5-chloro-4-hydroxy-3-(trifluoromethoxy)pyridine-2-acetate
Methyl 3-chloro-4-hydroxy-2-(trifluoromethoxy)pyridine-6-acetate
Methyl 3-chloro-2-hydroxy-6-(trifluoromethoxy)pyridine-5-acetate