6-Amino-2-nitro-3-(trifluoromethoxy)pyridine-4-carboxylic acid
3-Amino-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-5-acetonitrile
2-Amino-6-nitro-4-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Amino-3-iodo-6-(trifluoromethoxy)pyridine-4-acetic acid