2,3-Diamino-5-(difluoromethyl)-4-(trifluoromethyl)pyridine
4-(Chloromethyl)-3,5-diamino-2-(difluoromethyl)pyridine
5-(Difluoromethyl)-4-methyl-2-nitropyridine
3-(Difluoromethyl)-2-methyl-6-nitropyridine
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