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