2-(Chloromethyl)-6-(difluoromethyl)pyridine-3-carboxylic acid
2-(Bromomethyl)-4-(difluoromethyl)-5-nitropyridine
2-(Chloromethyl)-5-(difluoromethyl)pyridine-3-carboxylic acid
2-(Bromomethyl)-3-(difluoromethyl)-5-nitropyridine
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