Ethyl 2-bromo-3-(difluoromethyl)-4-methylpyridine-5-carboxylate
Methyl 4-bromo-3-(difluoromethyl)-5-iodopyridine-2-acetate
Methyl 5-bromo-2-(difluoromethyl)-3-methylpyridine-4-carboxylate
Methyl 3-bromo-4-(difluoromethyl)-5-iodopyridine-2-acetate
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