3-Chloro-6-cyano-2-(difluoromethyl)-5-fluoropyridine
5-Chloro-2-cyano-4-(difluoromethyl)-3-fluoropyridine
2-Bromo-5-(difluoromethyl)-3-nitropyridine-6-carboxaldehyde
6-Bromo-4-(difluoromethyl)-2-nitropyridine-3-carboxaldehyde
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