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