6-(Difluoromethyl)-2-fluoro-3-hydroxypyridine-4-sulfonamide
3-(Bromomethyl)-2-(difluoromethyl)-5-fluoro-6-hydroxypyridine
6-(Bromomethyl)-3-(difluoromethyl)-4-fluoro-2-hydroxypyridine
2-(Bromomethyl)-5-(difluoromethyl)-3-fluoro-4-hydroxypyridine
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