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