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