Ethyl 4-hydroxy-2-iodo-3-(trifluoromethoxy)pyridine-6-acetate
Methyl 4-fluoro-2-methyl-3-(trifluoromethoxy)pyridine-6-acetate
Ethyl 3-hydroxy-2-iodo-4-(trifluoromethoxy)pyridine-6-acetate
Methyl 2-fluoro-5-methyl-3-(trifluoromethoxy)pyridine-6-acetate