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