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