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