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