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