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