3-Amino-6-(chloromethyl)-2-(difluoromethyl)pyridine-4-carboxylic acid
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