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