Methyl 4-amino-2-(aminomethyl)-6-(difluoromethyl)pyridine-3-carboxylate
2-Amino-3-(chloromethyl)-6-(difluoromethyl)pyridine-5-acetonitrile
Methyl 3-amino-4-(chloromethyl)-6-(difluoromethyl)pyridine-2-carboxylate
5-Amino-2-(chloromethyl)-4-(difluoromethyl)-3-(trifluoromethyl)pyridine