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