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