2-(Difluoromethyl)-5-nitro-4-(trifluoromethyl)pyridine-3-sulfonyl chloride
5-Chloromethyl-2-hydroxy-3-(trifluoromethyl)pyridine
4-Bromo-6-cyano-2-(difluoromethyl)pyridine-3-sulfonamide
Methyl 4-bromo-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-carboxylate