3-Amino-2-(difluoromethyl)-4-fluoropyridine-5-sulfonamide
4-Amino-3-chloro-6-(difluoromethyl)-2-nitropyridine
3-Amino-5-chloro-2-(difluoromethyl)-6-nitropyridine
2-Amino-5-(difluoromethyl)-3-fluoro-4-iodopyridine
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