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