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