4-Chloro-3-nitro-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-Cyano-2-(difluoromethyl)-6-hydroxy-3-(trifluoromethoxy)pyridine
3-(Aminomethyl)-5-chloro-6-(trifluoromethoxy)pyridine-2-carboxylic acid
4-Cyano-2-(difluoromethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine