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