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