3-Hydroxy-5-nitro-2-(trifluoromethoxy)pyridine-4-carbonyl chloride
2-(Difluoromethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine-6-carboxaldehyde
5-Hydroxy-4-nitro-3-(trifluoromethoxy)pyridine-2-carbonyl chloride
2-(Difluoromethyl)-4-hydroxy-6-(trifluoromethoxy)pyridine-3-carboxaldehyde