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