Ethyl 5-(bromomethyl)-3-methyl-4-(trifluoromethoxy)pyridine-2-acetate
Ethyl 3-(bromomethyl)-5-methyl-4-(trifluoromethoxy)pyridine-2-acetate
Ethyl 3-(bromomethyl)-5-methyl-2-(trifluoromethoxy)pyridine-6-acetate
Ethyl 3-(bromomethyl)-5-methyl-2-(trifluoromethoxy)pyridine-4-acetate