3,6-Dichloro-2-(difluoromethyl)-4-fluoropyridine
2,5-Dichloro-4-(difluoromethyl)-3-fluoropyridine
3-(Difluoromethyl)-5-fluoropyridine-4-sulfonyl chloride
5-(Difluoromethyl)-4-fluoropyridine-2-sulfonyl chloride
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