6-Hydroxy-3-nitro-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-Fluoro-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-methanol
3-Hydroxy-5-methyl-6-(trifluoromethoxy)pyridine-2-carboxylic acid
5-Fluoro-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-methanol