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