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