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