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