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