3-Amino-2,5-difluoro-6-(difluoromethyl)pyridine
2,6-Dichloro-3-(difluoromethyl)-5-fluoropyridine
3,4-Dibromo-6-(difluoromethyl)-2-fluoropyridine
3,5-Diamino-2-(difluoromethyl)-6-fluoropyridine
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