5-Amino-4-(chloromethyl)-2-(difluoromethyl)-3-nitropyridine
5-Amino-4-(aminomethyl)-2-(difluoromethyl)-3-iodopyridine
3-Amino-4-(aminomethyl)-5-(difluoromethyl)-2-iodopyridine
3-Amino-4-(chloromethyl)-5-(difluoromethyl)-2-nitropyridine
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