Ethyl 6-bromo-2-methoxy-4-(trifluoromethoxy)pyridine-3-carboxylate
2-Bromo-3-fluoro-4-(trifluoromethoxy)pyridine-6-sulfonamide
5-Bromo-2-fluoro-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-Bromo-2-fluoro-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride