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