3-Hydroxy-6-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-carboxaldehyde
3-Hydroxy-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-carboxaldehyde
2-(Fluoromethyl)-3-hydroxy-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine
5-Hydroxy-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carboxaldehyde