2-Cyano-5-(difluoromethyl)-3,4-diiodopyridine
3-Cyano-4-(difluoromethyl)-2,6-diiodopyridine
4-Cyano-2-(difluoromethyl)-3,6-diiodopyridine
3-(Difluoromethyl)-2,5-diiodo-6-methoxypyridine
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