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