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