Ethyl 4-bromo-2-hydroxy-3-(trifluoromethoxy)pyridine-6-carboxylate
2-Bromo-6-nitro-3-(trifluoromethoxy)pyridine-5-sulfonyl chloride
Ethyl 3-bromo-5-hydroxy-6-(trifluoromethoxy)pyridine-2-carboxylate
6-Bromo-3-nitro-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride