2-Amino-4-(difluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine
4-Amino-3-nitro-6-(trifluoromethoxy)pyridine-2-carboxylic acid
5-Amino-2-(fluoromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine
4-Amino-3-nitro-2-(trifluoromethoxy)pyridine-6-carboxylic acid