3-(Difluoromethyl)-4-hydroxy-2-methyl-5-(trifluoromethoxy)pyridine
2-Hydroxy-3-nitro-5-(trifluoromethoxy)pyridine-6-sulfonyl chloride
2-Hydroxy-3-nitro-4-(trifluoromethoxy)pyridine-5-sulfonyl chloride
2-Fluoro-3-(fluoromethyl)-5-(trifluoromethoxy)pyridine-6-carboxylic acid