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