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