Ethyl 2-amino-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-acetate
Ethyl 6-amino-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-acetate
Ethyl 4-amino-3-(fluoromethyl)-2-(trifluoromethoxy)pyridine-5-acetate
Ethyl 4-amino-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-acetate