3-Chloro-4-hydroxy-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride
Methyl 4-hydroxy-3-methylpyridine-5-acetate
2-(Difluoromethyl)-4-nitro-3-(trifluoromethyl)pyridine-5-sulfonyl chloride
4-Iodo-2-(trifluoromethoxy)pyridine-5-sulfonyl chloride
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