Methyl 2-amino-4-(chloromethyl)-3-(difluoromethyl)pyridine-6-acetate
Ethyl 4-amino-6-(chloromethyl)-2-(difluoromethyl)pyridine-3-acetate
Methyl 2-amino-3-(chloromethyl)-6-(difluoromethyl)pyridine-4-acetate
Ethyl 4-amino-2-(chloromethyl)-5-(difluoromethyl)pyridine-3-acetate