2-Fluoro-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
6-Hydroxy-2-nitro-3-(trifluoromethoxy)pyridine-4-carbonyl chloride
5-(Difluoromethyl)-2-hydroxy-3-methylpyridine-6-sulfonamide
2-Cyano-3-(fluoromethyl)-4-(trifluoromethoxy)pyridine-5-acetic acid