5-(Bromomethyl)-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-sulfonamide
6-Bromo-3-(difluoromethyl)-2-methyl-4-(trifluoromethyl)pyridine
6-Cyano-2-(difluoromethyl)-3-hydroxy-4-methylpyridine
2-Amino-3-(chloromethyl)-6-iodo-4-(trifluoromethoxy)pyridine