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