Ethyl 4-amino-3-(aminomethyl)-2-(difluoromethyl)pyridine-6-acetate
3-Amino-4-(difluoromethyl)-5-nitropyridine-2-carboxaldehyde
2-Amino-5-(difluoromethyl)-6-nitropyridine-3-carboxaldehyde
Ethyl 2-amino-6-(aminomethyl)-5-(difluoromethyl)pyridine-3-acetate