4-Amino-6-(difluoromethyl)-3-nitropyridine-2-acetic acid
4-Amino-3-(difluoromethyl)-5-iodopyridine-2-carboxaldehyde
4-Amino-2-(difluoromethyl)-3-nitropyridine-5-acetic acid
4-Amino-2-(difluoromethyl)-5-iodopyridine-3-carboxaldehyde
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