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