2-Bromo-6-fluoro-3-nitro-5-(trifluoromethoxy)pyridine
6-Amino-3-bromo-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2-(4-Chloro-3-fluorobenzoyl)pyridine
2-(Difluoromethyl)-3-iodo-5-methylpyridine-6-sulfonamide
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