2-Amino-3-(aminomethyl)-4-(difluoromethyl)pyridine-6-acetonitrile
3-Amino-6-(aminomethyl)-2-(difluoromethyl)-5-(trifluoromethyl)pyridine
2-Amino-5-(aminomethyl)-6-(difluoromethyl)pyridine-3-acetonitrile
5-Amino-2-(aminomethyl)-3-(difluoromethyl)-6-(trifluoromethyl)pyridine