Methyl 3-(chloromethyl)-5-(difluoromethyl)-6-methylpyridine-2-carboxylate
Methyl 3-(bromomethyl)-6-(difluoromethyl)-2-methylpyridine-4-acetate
Methyl 3-(bromomethyl)-6-(difluoromethyl)-2-methylpyridine-5-acetate
Methyl 3-(bromomethyl)-6-(difluoromethyl)-4-methylpyridine-2-acetate