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