5-Amino-3-(aminomethyl)-2-(difluoromethyl)-4-iodopyridine
3-Amino-5-(chloromethyl)-4-(difluoromethyl)-2-nitropyridine
4-Amino-5-(difluoromethyl)-2-iodo-3-(trifluoromethyl)pyridine
2-Amino-6-(difluoromethyl)-4-nitropyridine-3-carboxylic acid
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