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