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