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