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