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