Ethyl 4-amino-3-bromo-2-(difluoromethyl)pyridine-6-carboxylate
Ethyl 3-amino-2-bromo-4-(difluoromethyl)pyridine-5-acetate
Ethyl 3-(difluoromethyl)-2,6-dimethoxypyridine-4-carboxylate
Ethyl 2-(difluoromethyl)-4,5-dimethoxypyridine-3-acetate
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