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