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