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