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