3-Bromo-2-cyano-5-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2-Bromo-5-cyano-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine
3-Bromo-5-chloro-4-(trifluoromethoxy)pyridine-2-sulfonamide
2-Bromo-4-cyano-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine