6-(Bromomethyl)-4-(difluoromethyl)-3-methoxy-2-nitropyridine
3-(Chloromethyl)-2-(difluoromethyl)-6-methyl-5-nitropyridine
2-(Bromomethyl)-4-(difluoromethyl)-3-methoxy-6-nitropyridine
3-(Chloromethyl)-2-(difluoromethyl)-5-methyl-6-nitropyridine
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