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