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