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