3-Bromo-2-hydroxy-6-(trifluoromethoxy)pyridine-4-carboxaldehyde
4-Bromo-3-methyl-2-(trifluoromethoxy)pyridine-5-sulfonyl chloride
3-Bromo-2-hydroxy-4-(trifluoromethoxy)pyridine-6-carboxaldehyde
4-Bromo-6-methyl-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride