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