2-Amino-4-chloro-3-(difluoromethyl)pyridine-5-sulfonamide
3-Amino-6-bromo-2-(difluoromethyl)-4-iodopyridine
2-Amino-3-chloro-5-(difluoromethyl)pyridine-6-sulfonamide
3-Amino-2-cyano-5-(difluoromethyl)-6-fluoropyridine
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