4-Amino-2-(difluoromethyl)-5-iodo-3-nitropyridine
5-Amino-3-(difluoromethyl)-2-iodo-4-nitropyridine
3-Cyano-4-(difluoromethyl)-6-iodo-2-nitropyridine
6-Chloro-4-nitropicolinonitrile
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