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