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