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