6-Hydroxy-3-methyl-4-(trifluoromethoxy)pyridine-2-carboxaldehyde
2-(Difluoromethyl)-3-hydroxy-4-nitro-6-(trifluoromethoxy)pyridine
5-(Fluoromethyl)-2-hydroxy-3-nitro-6-(trifluoromethoxy)pyridine
4-Hydroxy-6-methyl-2-(trifluoromethoxy)pyridine-3-methanol