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