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