4-(Difluoromethyl)-2-hydroxypyridine-5-carbonyl chloride
4-(Difluoromethyl)-2-hydroxypyridine-3-carbonyl chloride
5-(Difluoromethyl)-3-hydroxypyridine-2-carbonyl chloride
3-(Difluoromethyl)-5-hydroxypyridine-4-carbonyl chloride
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