5-Bromo-4-chloro-2-(difluoromethyl)pyridine-3-sulfonyl chloride
5-Cyano-2-(difluoromethyl)-3-methoxypyridine-4-carbonyl chloride
3-Chloro-6-methyl-4-(trifluoromethoxy)pyridine-2-sulfonamide
4-(Aminomethyl)-2-fluoro-3-(trifluoromethoxy)pyridine-5-acetic acid