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