3-(Difluoromethyl)-6-methoxy-4-nitropyridine-2-carboxylic acid
5-(Difluoromethyl)-4-methyl-3-nitropyridine-2-acetic acid
3-(Difluoromethyl)-4-methyl-2-nitropyridine-6-acetic acid
5-(Difluoromethyl)-2-methoxy-3-nitropyridine-6-carboxylic acid
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