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