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