Ethyl 4-amino-2-(aminomethyl)-3-(difluoromethyl)pyridine-5-carboxylate
4-Amino-2-(difluoromethyl)-6-methylpyridine-3-acetonitrile
4-Amino-5-(difluoromethyl)-3-methylpyridine-2-acetonitrile
Ethyl 5-amino-3-(aminomethyl)-4-(difluoromethyl)pyridine-2-carboxylate