5-Bromo-2-(difluoromethyl)-3-nitropyridine-6-carboxaldehyde
2-Bromo-3-(difluoromethyl)-5-methoxy-4-nitropyridine
2-Bromo-3-(difluoromethyl)-4-methoxy-5-nitropyridine
4-Bromo-5-(difluoromethyl)-2-nitropyridine-3-carboxaldehyde
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