4-Amino-6-(difluoromethyl)-2-nitropyridine-3-acetic acid
Methyl 5-amino-2-(difluoromethyl)-3-iodopyridine-6-carboxylate
4-Amino-2-(difluoromethyl)-5-nitropyridine-3-acetic acid
Methyl 4-amino-3-(difluoromethyl)-6-iodopyridine-2-carboxylate
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