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