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