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