Methyl 5-fluoro-3-nitro-4-(trifluoromethoxy)pyridine-2-carboxylate
3-Cyano-2-fluoro-4-(trifluoromethoxy)pyridine-5-sulfonyl chloride
Methyl 3-fluoro-5-nitro-2-(trifluoromethoxy)pyridine-4-carboxylate
2-Cyano-6-fluoro-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride