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