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