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