6-Amino-4-(aminomethyl)-3-(difluoromethyl)-2-nitropyridine
3-Amino-5-(chloromethyl)-2-(difluoromethyl)-4-nitropyridine
2-Amino-3-(difluoromethyl)-5-iodo-4-nitropyridine
3-Amino-5-(difluoromethyl)-6-iodo-2-methylpyridine
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