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