5-Amino-2-(chloromethyl)-3-(difluoromethyl)-4-nitropyridine
Methyl 3-amino-6-(bromomethyl)-4-(difluoromethyl)pyridine-2-acetate
4-Amino-3-(chloromethyl)-2-(difluoromethyl)-5-nitropyridine
Methyl 5-amino-2-(bromomethyl)-3-(difluoromethyl)pyridine-4-acetate