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