3-Fluoro-6-nitro-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
5-Fluoro-2-nitro-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
Ethyl 6-fluoro-4-methoxy-2-(trifluoromethoxy)pyridine-3-carboxylate
4-Fluoro-5-nitro-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride