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