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