4-(Difluoromethyl)-3-nitro-2-(trifluoromethyl)pyridine
2,5-Dimethyl-3-fluoropyridine
2-(Difluoromethyl)-5-fluoro-3-hydroxypyridine-4-sulfonyl chloride
2-(Chloromethyl)-5-(difluoromethyl)-3-(trifluoromethyl)pyridine-6-sulfonyl chloride
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