Methyl 2-amino-3-(aminomethyl)-6-(difluoromethyl)pyridine-5-carboxylate
6-Amino-3-(aminomethyl)-4-(difluoromethyl)-2-methylpyridine
Methyl 2-amino-3-(aminomethyl)-5-(difluoromethyl)pyridine-4-carboxylate
4-Amino-3-(bromomethyl)-6-(difluoromethyl)-2-methylpyridine