3-Amino-4-(aminomethyl)-2-(difluoromethyl)pyridine-5-methanol
3-Amino-2-(aminomethyl)-4-(difluoromethyl)pyridine-5-methanol
2-Amino-5-(aminomethyl)-3-(difluoromethyl)pyridine-6-carboxylic acid
2-Amino-4-(aminomethyl)-6-(difluoromethyl)pyridine-3-carboxylic acid