2-Amino-6-cyano-5-(difluoromethyl)-3-nitropyridine
3-Amino-5-bromo-6-(difluoromethyl)-2-iodopyridine
4-Amino-5-(aminomethyl)-3-cyano-2-(difluoromethyl)pyridine
4-Amino-3-(aminomethyl)-2-cyano-5-(difluoromethyl)pyridine
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