3-(Chloromethyl)-2,4-diamino-5-(difluoromethyl)pyridine
5-(Chloromethyl)-2,3-diamino-6-(difluoromethyl)pyridine
3-(Bromomethyl)-2-(difluoromethyl)pyridine-4-sulfonamide
3-(Bromomethyl)-2,5-diamino-4-(difluoromethyl)pyridine
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