2-Cyano-4-(difluoromethyl)-3,6-diiodopyridine
5-Amino-4-bromo-3-(difluoromethyl)-2-fluoropyridine
3-Cyano-6-(difluoromethyl)-2,5-diiodopyridine
3-Amino-4-bromo-2-(difluoromethyl)-5-fluoropyridine
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