3-(Bromomethyl)-4-(difluoromethyl)-2-iodo-6-nitropyridine
4-(Chloromethyl)-3-(difluoromethyl)-2-iodo-5-nitropyridine
4-(Difluoromethyl)-6-iodo-3-methoxy-2-methylpyridine
3-(Difluoromethyl)-2-iodo-4-methoxy-5-methylpyridine
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