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