Ethyl 3-amino-2-fluoro-6-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 3-amino-2-fluoro-4-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 2-amino-6-fluoro-5-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 2-amino-6-fluoro-3-(trifluoromethoxy)pyridine-5-carboxylate