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