3-Amino-4-nitro-6-(trifluoromethoxy)pyridine-2-acetic acid
6-Amino-3-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Amino-4-hydroxy-6-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Amino-4-hydroxy-3-(trifluoromethoxy)pyridine-6-carboxylic acid