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