Methyl 2-bromo-5-(chloromethyl)-6-(difluoromethyl)pyridine-3-acetate
Ethyl 4-bromo-2-(difluoromethyl)-3-nitropyridine-5-acetate
Ethyl 3-bromo-5-(difluoromethyl)-6-nitropyridine-2-acetate
Methyl 6-bromo-3-(chloromethyl)-4-(difluoromethyl)pyridine-2-acetate