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