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