2-Amino-3-fluoro-5-(trifluoromethoxy)pyridine-4-sulfonamide
4-Amino-3-hydroxy-2-(trifluoromethoxy)pyridine-6-acetic acid
2-Amino-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-6-carboxylic acid
4-Amino-2-hydroxy-6-(trifluoromethoxy)pyridine-3-acetic acid