4-(Difluoromethyl)-3-fluoro-5-methoxypyridine-2-sulfonamide
6-(Bromomethyl)-4-(difluoromethyl)-3-fluoro-2-nitropyridine
4-(Chloromethyl)-3-(difluoromethyl)-2-fluoro-5-nitropyridine
4-(Chloromethyl)-6-(difluoromethyl)-3-fluoro-2-nitropyridine
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