4-Amino-3-hydroxy-5-(trifluoromethoxy)pyridine-2-carboxaldehyde
4-Amino-2-(chloromethyl)-3-iodo-5-(trifluoromethoxy)pyridine
4-Amino-6-hydroxy-2-(trifluoromethoxy)pyridine-3-carboxaldehyde
4-Amino-2-hydroxy-5-(trifluoromethoxy)pyridine-3-carboxaldehyde