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