2,6-Diamino-3-(difluoromethyl)-4-nitropyridine
4,6-Diamino-3-(difluoromethyl)-2-nitropyridine
4,5-Diamino-2-(difluoromethyl)-3-(trifluoromethyl)pyridine
3,6-Diamino-2-(difluoromethyl)-5-(trifluoromethyl)pyridine
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