Ethyl 2,6-diamino-3-(difluoromethyl)pyridine-5-acetate
4-(Bromomethyl)-2,3-dibromo-5-(difluoromethyl)pyridine
Ethyl 3,6-diamino-2-(difluoromethyl)pyridine-4-acetate
Ethyl 2,5-diamino-3-(difluoromethyl)pyridine-6-acetate
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