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