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