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