3,5-Diamino-2-(difluoromethyl)pyridine-6-carboxylic acid
3,4-Diamino-6-(difluoromethyl)pyridine-2-carboxylic acid
2-Bromo-6-(difluoromethyl)-3,4-diiodopyridine
2,6-Diamino-3-(difluoromethyl)pyridine-5-carboxylic acid
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