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