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