4-(Difluoromethyl)-3-methoxy-5-nitropyridine-2-sulfonamide
5-Amino-3-bromo-2-(difluoromethyl)pyridine-4-sulfonamide
2-Amino-6-cyano-5-(difluoromethyl)pyridine-3-sulfonamide
2-Amino-6-cyano-3-(difluoromethyl)pyridine-5-sulfonamide
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