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