5-Amino-2-(difluoromethyl)-3-nitropyridine-6-sulfonamide
3-Amino-4-(difluoromethyl)-5-iodopyridine-2-methanol
4-Amino-3-(difluoromethyl)-2-nitropyridine-6-sulfonamide
6-Amino-2-(difluoromethyl)-3-iodopyridine-4-methanol
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