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