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